Daniel Altmaier vs Zhizhen Zhang Head-to-Head Stats & Results
Germany Daniel AltmaierDaniel Altmaier - Germany
39 Bad Form
W
L
W
L
L
W
L
ATP Rank
64
Elo Score
860
Age 27, 1.88m, 80kg
H2H Record
1 - 1
Wins
50% - 50%
Sets Won
2 - 3
Daniel Altmaier and Zhizhen Zhang have equal wins in their careers.
ChinaZhizhen ZhangChina - Zhizhen Zhang
Struggling Form 45
L
L
L
L
W
W
L
ATP Rank
239
Elo Score
240
Age 29, 1.93m, 87kg
Verdict : Daniel Altmaier and Zhizhen Zhang have equal wins in their careers.
H2H Stats
Latest Results
ALL SURFACES
HARD •
CLAY •
GRASS •
Head-to-Head - Full Stats
Performance
Profile
Data Point
Daniel Altmaier
Zhizhen Zhang
Prize Money
Career
Career
$4,607,680USD
$3,384,802USD
Current Rank
64
239
Wins
H2H
H2H
1(50.0%)
1(50.0%)
Sets Won
H2H
H2H
2(40.0%)
3(60.0%)
Win Percentage
2026 Calendar Year
2026 Calendar Year
39.1%9 / 23 Matches
45.0%9 / 20 Matches
Win Percentage
Last 12 Months
Last 12 Months
43.1%25 / 58 Matches
41.7%10 / 24 Matches
Data Point
Daniel Altmaier
Zhizhen Zhang
Main Hand
Right-handed
Right-handed
Age
27
29
Birthday
September 12, 1998
October 16, 1996
Height
1.88m
1.93m
Weight
80kg
87kg
Head-to-Head Record
Date
Tournament
Results
Jul 28
2023
Hamburg ATP
Clay
Daniel Altmaier
0
-2
Zhizhen Zhang
Win Percentage (Match / Set)
2026 Calendar Year
Last 12 Months
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Wins
39%
45%
Match Wins (3 Sets)
43%
47%
Match Wins (5 Sets)
0%
0%
Wins in Straight Sets
22%
35%
Wins From Behind
13%
8%
Won At Least 1 Set
43%
65%
Set 1 Win
30%
50%
Set 2 Win
35%
50%
Set 3 Win
67%
29%
Set 4 Win
N/A
N/A
Set 5 Win
N/A
N/A
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Wins
43%
42%
Match Wins (3 Sets)
42%
43%
Match Wins (5 Sets)
75%
0%
Wins in Straight Sets
24%
29%
Wins From Behind
11%
13%
Won At Least 1 Set
57%
63%
Set 1 Win
47%
46%
Set 2 Win
34%
46%
Set 3 Win
45%
33%
Set 4 Win
67%
N/A
Set 5 Win
100%
N/A
Aces - Over/Under, Match Total, Average (3 Set Matches)
2026 Calendar Year
Last 12 Months
Milestones
Over
Under
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Aces Per Match
5.43
7.58
13.01
Most Aces in a match
67%
53%
N/A
1+
100%
100%
100%
2+
90%
95%
98%
3+
81%
89%
93%
4+
62%
79%
91%
5+
52%
79%
86%
6+
38%
63%
83%
7+
38%
63%
79%
8+
29%
53%
76%
9+
19%
42%
64%
10+
14%
37%
56%
15+
0%
5%
26%
20+
0%
0%
13%
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Over 0.5
100%
100%
100%
Over 1.5
90%
95%
98%
Over 2.5
81%
89%
93%
Over 3.5
62%
79%
91%
Over 4.5
52%
79%
86%
Over 5.5
48%
74%
83%
Over 6.5
38%
63%
79%
Over 7.5
29%
53%
76%
Over 8.5
19%
42%
64%
Over 9.5
14%
37%
56%
Over 10.5
10%
21%
49%
Over 11.5
0%
11%
41%
Over 12.5
0%
5%
37%
Over 13.5
0%
5%
32%
Over 14.5
0%
5%
26%
Over 15.5
0%
0%
24%
Over 16.5
0%
0%
24%
Over 17.5
0%
0%
16%
Over 18.5
0%
0%
16%
Over 19.5
0%
0%
13%
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Under 0.5
0%
0%
0%
Under 1.5
10%
5%
3%
Under 2.5
19%
11%
8%
Under 3.5
38%
21%
10%
Under 4.5
48%
21%
15%
Under 5.5
52%
26%
17%
Under 6.5
62%
37%
22%
Under 7.5
71%
47%
25%
Under 8.5
81%
58%
37%
Under 9.5
86%
63%
44%
Under 10.5
90%
79%
51%
Under 11.5
100%
89%
59%
Under 12.5
100%
95%
64%
Under 13.5
100%
95%
69%
Under 14.5
100%
95%
74%
Milestones
Over
Under
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Aces Per Match
6.83
7.57
14.40
Most Aces in a match
58%
57%
N/A
1+
100%
100%
100%
2+
96%
91%
99%
3+
89%
87%
96%
4+
77%
78%
95%
5+
70%
78%
94%
6+
47%
61%
93%
7+
47%
61%
87%
8+
36%
52%
82%
9+
23%
43%
72%
10+
19%
35%
67%
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Over 0.5
100%
100%
100%
Over 1.5
96%
91%
99%
Over 2.5
89%
87%
96%
Over 3.5
77%
78%
95%
Over 4.5
70%
78%
94%
Over 5.5
58%
70%
93%
Over 6.5
47%
61%
87%
Over 7.5
36%
52%
82%
Over 8.5
23%
43%
72%
Over 9.5
19%
35%
67%
Over 10.5
13%
22%
61%
Over 11.5
9%
13%
54%
Over 12.5
9%
9%
47%
Over 13.5
6%
9%
41%
Over 14.5
6%
9%
36%
Over 15.5
4%
0%
30%
Over 16.5
4%
0%
27%
Over 17.5
4%
0%
20%
Over 18.5
4%
0%
19%
Over 19.5
2%
0%
17%
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Under 0.5
0%
0%
0%
Under 1.5
4%
9%
1%
Under 2.5
11%
13%
4%
Under 3.5
23%
22%
5%
Under 4.5
30%
22%
7%
Under 5.5
42%
30%
8%
Under 6.5
53%
39%
13%
Under 7.5
64%
48%
18%
Under 8.5
77%
57%
28%
Under 9.5
81%
65%
33%
Under 10.5
87%
78%
40%
Under 11.5
91%
87%
47%
Under 12.5
91%
91%
54%
Under 13.5
94%
91%
59%
Under 14.5
94%
91%
65%
Match Total Games - Over/Under
2026 Calendar Year
Last 12 Months
Total Games In A Set
3 Set Matches
5 Set Matches
Data Point
Daniel Altmaier
Zhizhen Zhang
Average
Average Games in a Set
9.22
9.8
9.51
Over 6.5
100%
100%
100%
Over 7.5
90%
84%
87%
Over 8.5
67%
74%
71%
Over 9.5
48%
47%
48%
Over 10.5
14%
26%
20%
Over 11.5
14%
26%
20%
Over 12.5
5%
26%
16%
Data Point
Daniel Altmaier
Zhizhen Zhang
Average
Over 12.5
100%
100%
100%
Over 13.5
100%
100%
100%
Over 14.5
100%
95%
98%
Over 15.5
95%
95%
95%
Over 16.5
81%
89%
85%
Over 17.5
71%
74%
73%
Over 18.5
57%
68%
63%
Over 19.5
52%
63%
58%
Over 20.5
48%
58%
53%
Over 21.5
33%
53%
43%
Over 22.5
33%
42%
38%
Over 23.5
19%
37%
28%
Over 24.5
19%
37%
28%
Over 25.5
19%
32%
26%
Over 26.5
14%
26%
20%
Over 27.5
14%
26%
20%
Over 28.5
14%
26%
20%
Over 29.5
10%
21%
16%
Data Point
Daniel Altmaier
Zhizhen Zhang
Average
Over 18.5
100%
100%
100%
Over 19.5
100%
100%
100%
Over 20.5
100%
100%
100%
Over 21.5
100%
100%
100%
Over 22.5
100%
100%
100%
Over 23.5
100%
100%
100%
Over 24.5
100%
100%
100%
Over 25.5
0%
100%
50%
Over 26.5
0%
100%
50%
Over 27.5
0%
100%
50%
Over 28.5
0%
100%
50%
Over 29.5
0%
100%
50%
Over 30.5
0%
100%
50%
Over 31.5
0%
0%
0%
Over 32.5
0%
0%
0%
Over 33.5
0%
0%
0%
Over 34.5
0%
0%
0%
Over 35.5
0%
0%
0%
Over 36.5
0%
0%
0%
Over 37.5
0%
0%
0%
Total Games In A Set
3 Set Matches
5 Set Matches
Data Point
Daniel Altmaier
Zhizhen Zhang
Average
Average Games in a Set
9.48
9.88
9.68
Over 6.5
98%
100%
99%
Over 7.5
91%
87%
89%
Over 8.5
77%
74%
76%
Over 9.5
43%
52%
48%
Over 10.5
17%
26%
22%
Over 11.5
17%
26%
22%
Over 12.5
9%
26%
18%
Data Point
Daniel Altmaier
Zhizhen Zhang
Average
Over 12.5
100%
100%
100%
Over 13.5
100%
100%
100%
Over 14.5
98%
96%
97%
Over 15.5
96%
96%
96%
Over 16.5
89%
91%
90%
Over 17.5
83%
78%
81%
Over 18.5
68%
70%
69%
Over 19.5
58%
61%
60%
Over 20.5
55%
57%
56%
Over 21.5
42%
52%
47%
Over 22.5
42%
43%
43%
Over 23.5
32%
39%
36%
Over 24.5
32%
39%
36%
Over 25.5
30%
35%
33%
Over 26.5
19%
30%
25%
Over 27.5
17%
26%
22%
Over 28.5
17%
26%
22%
Over 29.5
15%
22%
19%
Data Point
Daniel Altmaier
Zhizhen Zhang
Average
Over 18.5
100%
100%
100%
Over 19.5
100%
100%
100%
Over 20.5
100%
100%
100%
Over 21.5
100%
100%
100%
Over 22.5
100%
100%
100%
Over 23.5
100%
100%
100%
Over 24.5
100%
100%
100%
Over 25.5
75%
100%
88%
Over 26.5
75%
100%
88%
Over 27.5
75%
100%
88%
Over 28.5
75%
100%
88%
Over 29.5
75%
100%
88%
Over 30.5
75%
100%
88%
Over 31.5
75%
0%
38%
Over 32.5
75%
0%
38%
Over 33.5
75%
0%
38%
Over 34.5
75%
0%
38%
Over 35.5
75%
0%
38%
Over 36.5
50%
0%
25%
Over 37.5
25%
0%
13%
Break of Serve (Break Points Won) - Over/Under
2026 Calendar Year
Last 12 Months
3 Set Matches
5 Set Matches
Breaks Per Set
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Breaks Per Match
2.29
1.32
3.61
Over 0.5
95%
68%
100%
Over 1.5
0%
68%
100%
Over 2.5
0%
21%
66%
Over 3.5
0%
5%
44%
Over 4.5
0%
0%
41%
Over 5.5
0%
0%
5%
Over 6.5
0%
0%
5%
Over 7.5
0%
0%
0%
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Breaks Per Match
3
3
6
Over 0.5
0%
100%
100%
Over 1.5
0%
100%
100%
Over 2.5
0%
0%
100%
Over 3.5
0%
0%
100%
Over 4.5
0%
0%
100%
Over 5.5
0%
0%
100%
Over 6.5
0%
0%
0%
Over 7.5
0%
0%
0%
Over 8.5
0%
0%
0%
Over 9.5
0%
0%
0%
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Average Break-Points Converted (Set 1)
1.48
0.76
2.24
Average Break-Points Converted (Set 2)
0.81
0.5
1.31
Average Break-Points Converted (Set 3)
5
1
6
will Break Serve %
83%
61%
N/A
will not Break Serve %
77%
22%
N/A
Over 0.5
95%
68%
100%
Over 1.5
0%
16%
74%
Over 2.5
0%
0%
48%
Over 3.5
0%
0%
3%
Over 4.5
0%
0%
0%
Over 5.5
0%
0%
0%
Over 6.5
0%
0%
0%
Over 7.5
0%
0%
0%
Breaks Per Set data uses Set 1 as a sample.
3 Set Matches
5 Set Matches
Breaks Per Set
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Breaks Per Match
2.25
1.5
3.75
Over 0.5
81%
70%
100%
Over 1.5
36%
65%
97%
Over 2.5
26%
22%
65%
Over 3.5
9%
9%
43%
Over 4.5
4%
0%
34%
Over 5.5
2%
0%
16%
Over 6.5
0%
0%
13%
Over 7.5
0%
0%
6%
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Breaks Per Match
3.38
3
6.38
Over 0.5
75%
100%
100%
Over 1.5
75%
100%
100%
Over 2.5
75%
0%
100%
Over 3.5
75%
0%
100%
Over 4.5
75%
0%
100%
Over 5.5
25%
0%
100%
Over 6.5
0%
0%
25%
Over 7.5
0%
0%
13%
Over 8.5
0%
0%
0%
Over 9.5
0%
0%
0%
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Average Break-Points Converted (Set 1)
1.12
0.8
1.92
Average Break-Points Converted (Set 2)
0.82
0.59
1.41
Average Break-Points Converted (Set 3)
0.86
0.81
1.67
will Break Serve %
54%
55%
N/A
will not Break Serve %
58%
22%
N/A
Over 0.5
75%
65%
96%
Over 1.5
15%
22%
61%
Over 2.5
0%
0%
31%
Over 3.5
0%
0%
3%
Breaks Per Set data uses Set 1 as a sample.
Double Faults - Over/Under
2026 Calendar Year
Last 12 Months
3 Set Matches
5 Set Matches
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Double Faults Per Match
2.14
1.89
4.03
Over 0.5 (1+)
86%
79%
95%
Over 1.5 (2+)
57%
63%
93%
Over 2.5 (3+)
33%
37%
78%
Over 3.5 (4+)
19%
11%
60%
Over 4.5 (5+)
14%
0%
41%
Over 5.5 (6+)
5%
0%
28%
Over 6.5 (7+)
0%
0%
18%
Over 7.5 (8+)
0%
0%
13%
Over 8.5 (9+)
0%
0%
5%
Over 9.5 (10+)
0%
0%
0%
Over 10.5 (11+)
0%
0%
0%
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Double Faults Per Match
4
1
5
Over 0.5 (1+)
100%
100%
100%
Over 1.5 (2+)
100%
0%
100%
Over 2.5 (3+)
100%
0%
100%
Over 3.5 (4+)
100%
0%
50%
Over 4.5 (5+)
0%
0%
50%
Over 5.5 (6+)
0%
0%
50%
Over 6.5 (7+)
0%
0%
50%
Over 7.5 (8+)
0%
0%
0%
Over 8.5 (9+)
0%
0%
0%
Over 9.5 (10+)
0%
0%
0%
Over 10.5 (11+)
0%
0%
0%
Over 11.5 (12+)
0%
0%
N/A
3 Set Matches
5 Set Matches
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Double Faults Per Match
2.53
2.04
4.57
Over 0.5 (1+)
85%
78%
97%
Over 1.5 (2+)
66%
61%
95%
Over 2.5 (3+)
42%
35%
81%
Over 3.5 (4+)
25%
13%
63%
Over 4.5 (5+)
19%
4%
47%
Over 5.5 (6+)
9%
4%
35%
Over 6.5 (7+)
6%
4%
26%
Over 7.5 (8+)
2%
4%
19%
Over 8.5 (9+)
0%
0%
13%
Over 9.5 (10+)
0%
0%
6%
Over 10.5 (11+)
0%
0%
6%
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Double Faults Per Match
4
1
5
Over 0.5 (1+)
100%
100%
100%
Over 1.5 (2+)
100%
0%
100%
Over 2.5 (3+)
100%
0%
100%
Over 3.5 (4+)
100%
0%
50%
Over 4.5 (5+)
0%
0%
38%
Over 5.5 (6+)
0%
0%
25%
Over 6.5 (7+)
0%
0%
25%
Over 7.5 (8+)
0%
0%
13%
Over 8.5 (9+)
0%
0%
13%
Over 9.5 (10+)
0%
0%
13%
Over 10.5 (11+)
0%
0%
0%
Tie Breaks - Over/Under
2026 Calendar Year
Last 12 Months
3 Set Matches
5 Set Matches
Data Point
Daniel Altmaier
(Match)
(Match)
Zhizhen Zhang
(Match)
(Match)
Average
Tie Breaks Per Match
0.33
0.58
0.46
Over 0.5
29%
47%
38%
Over 1.5
5%
11%
8%
Over 2.5
0%
0%
0%
Under 0.5
71%
53%
38%
Under 1.5
95%
89%
8%
Under 2.5
100%
100%
0%
Data Point
Daniel Altmaier (Match)
Zhizhen Zhang (Match)
Average
Tie Breaks Per Match
1
1
1
Over 0.5
100%
100%
100%
Over 1.5
0%
0%
0%
Over 2.5
0%
0%
0%
Under 0.5
0%
0%
0%
Under 1.5
100%
100%
100%
Under 2.5
100%
100%
100%
3 Set Matches
5 Set Matches
Data Point
Daniel Altmaier
(Match)
(Match)
Zhizhen Zhang
(Match)
(Match)
Average
Tie Breaks Per Match
0.4
0.57
0.48
Over 0.5
30%
43%
37%
Over 1.5
8%
13%
10%
Over 2.5
2%
0%
1%
Under 0.5
30%
43%
37%
Under 1.5
8%
13%
10%
Under 2.5
2%
0%
1%
Data Point
Daniel Altmaier (Match)
Zhizhen Zhang (Match)
Average
Tie Breaks Per Match
0.25
1
0.63
Over 0.5
25%
100%
63%
Over 1.5
0%
0%
0%
Over 2.5
0%
0%
0%
Under 0.5
75%
0%
38%
Under 1.5
100%
100%
100%
Under 2.5
100%
100%
100%
Net Points Won - Over/Under
2026 Calendar Year
Last 12 Months
3 Set Matches
5 Set Matches
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Net Points Won Per Match
8.78
5.32
14.1
Over 4.5 (5+)
56%
29%
43%
Over 5.5 (6+)
50%
24%
37%
Over 6.5 (7+)
39%
18%
29%
Over 7.5 (8+)
33%
12%
23%
Over 8.5 (9+)
33%
12%
23%
Over 9.5 (10+)
33%
6%
20%
Over 10.5 (11+)
33%
6%
20%
Over 11.5 (12+)
22%
6%
14%
Over 14.5 (12+)
11%
6%
9%
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Net Point Won Per Match
8
10.5
18.5
Over 4.5 (5+)
100%
100%
100%
Over 5.5 (6+)
100%
100%
100%
Over 6.5 (7+)
0%
100%
50%
Over 7.5 (8+)
0%
100%
50%
Over 8.5 (9+)
0%
100%
50%
Over 9.5 (10+)
0%
100%
50%
Over 10.5 (11+)
0%
100%
50%
Over 11.5 (12+)
0%
0%
0%
Over 14.5 (15+)
0%
0%
0%
Over 19.5 (20+)
0%
0%
0%
Over 22.5 (23+)
0%
0%
0%
3 Set Matches
5 Set Matches
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Net Points Won Per Match
11.71
6.3
18.01
Over 4.5 (5+)
72%
40%
56%
Over 5.5 (6+)
63%
35%
49%
Over 6.5 (7+)
56%
30%
43%
Over 7.5 (8+)
44%
25%
35%
Over 8.5 (9+)
44%
25%
35%
Over 9.5 (10+)
42%
20%
31%
Over 10.5 (11+)
35%
20%
28%
Over 11.5 (12+)
28%
20%
24%
Over 14.5 (15+)
21%
5%
13%
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Net Points won Per Match
15.25
10.5
25.75
Over 4.5 (5+)
100%
100%
100%
Over 5.5 (6+)
100%
100%
100%
Over 6.5 (7+)
75%
100%
88%
Over 7.5 (8+)
75%
100%
88%
Over 8.5 (9+)
75%
100%
88%
Over 9.5 (10+)
75%
100%
88%
Over 10.5 (11+)
75%
100%
88%
Over 11.5 (12+)
75%
0%
38%
Over 14.5 (15+)
50%
0%
25%
Over 19.5 (20+)
25%
0%
25%
Over 22.5 (23+)
0%
0%
13%
Head-to-Head (Hard Courts)
Performance
Profile
Data Point
Daniel Altmaier
Zhizhen Zhang
Wins
H2H
H2H
0(0%)
0(0%)
Sets Won
H2H
H2H
0(0%)
0(0%)
Win Percentage
2026 Calendar Year
2026 Calendar Year
0.0%0 / 4 Matches
54.6%6 / 11 Matches
Win Percentage
Last 12 Months
Last 12 Months
34.6%9 / 26 Matches
46.7%7 / 15 Matches
Data Point
Daniel Altmaier
Zhizhen Zhang
Main Hand
Right-handed
Right-handed
Age
27
29
Birthday
September 12, 1998
October 16, 1996
Height
1.88m
1.93m
Weight
80kg
87kg
Win Percentage (Hard Courts)
2026 Calendar Year
Last 12 Months
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Wins
0%
55%
Match Wins (3 Sets)
0%
55%
Match Wins (5 Sets)
0%
0%
Wins in Straight Sets
0%
55%
Wins From Behind
0%
0%
Won At Least 1 Set
0%
73%
Set 1 Win
0%
64%
Set 2 Win
0%
64%
Set 3 Win
N/A
0%
Set 4 Win
N/A
N/A
Set 5 Win
N/A
N/A
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Wins
35%
47%
Match Wins (3 Sets)
35%
47%
Match Wins (5 Sets)
0%
0%
Wins in Straight Sets
23%
40%
Wins From Behind
6%
11%
Won At Least 1 Set
62%
67%
Set 1 Win
54%
53%
Set 2 Win
31%
53%
Set 3 Win
20%
25%
Set 4 Win
N/A
N/A
Set 5 Win
100%
N/A
Aces (Hard Courts)
2026 Calendar Year
Last 12 Months
Milestones
Over
Under
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Aces Per Match
5.00
8.00
13.00
Most Aces in a match
25%
55%
N/A
1+
100%
100%
100%
2+
100%
100%
100%
3+
75%
91%
100%
4+
50%
82%
100%
5+
50%
82%
100%
6+
50%
73%
100%
7+
50%
73%
88%
8+
25%
55%
88%
9+
0%
45%
75%
10+
0%
36%
58%
15+
0%
9%
23%
20+
0%
0%
18%
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Over 0.5
100%
100%
100%
Over 1.5
100%
100%
100%
Over 2.5
75%
91%
100%
Over 3.5
50%
82%
100%
Over 4.5
50%
82%
100%
Over 5.5
50%
82%
100%
Over 6.5
50%
73%
88%
Over 7.5
25%
55%
88%
Over 8.5
0%
45%
75%
Over 9.5
0%
36%
58%
Over 10.5
0%
18%
58%
Over 11.5
0%
9%
54%
Over 12.5
0%
9%
49%
Over 13.5
0%
9%
40%
Over 14.5
0%
9%
23%
Over 15.5
0%
0%
23%
Over 16.5
0%
0%
23%
Over 17.5
0%
0%
18%
Over 18.5
0%
0%
18%
Over 19.5
0%
0%
18%
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Under 0.5
0%
0%
0%
Under 1.5
0%
0%
0%
Under 2.5
25%
9%
0%
Under 3.5
50%
18%
0%
Under 4.5
50%
18%
0%
Under 5.5
50%
18%
0%
Under 6.5
50%
27%
13%
Under 7.5
75%
45%
13%
Under 8.5
100%
55%
25%
Under 9.5
100%
64%
42%
Under 10.5
100%
82%
42%
Under 11.5
100%
91%
47%
Under 12.5
100%
91%
51%
Under 13.5
100%
91%
60%
Under 14.5
100%
91%
78%
Milestones
Over
Under
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Aces Per Match
7.92
7.87
15.79
Most Aces in a match
58%
57%
N/A
1+
100%
100%
100%
2+
100%
93%
100%
3+
92%
87%
100%
4+
81%
80%
100%
5+
73%
80%
100%
6+
58%
67%
100%
7+
58%
67%
95%
8+
42%
53%
92%
9+
27%
47%
86%
10+
23%
33%
79%
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Over 0.5
100%
100%
100%
Over 1.5
100%
93%
100%
Over 2.5
92%
87%
100%
Over 3.5
81%
80%
100%
Over 4.5
73%
80%
100%
Over 5.5
65%
73%
100%
Over 6.5
58%
67%
95%
Over 7.5
42%
53%
92%
Over 8.5
27%
47%
86%
Over 9.5
23%
33%
79%
Over 10.5
19%
20%
73%
Over 11.5
19%
13%
68%
Over 12.5
19%
13%
61%
Over 13.5
12%
13%
52%
Over 14.5
12%
13%
43%
Over 15.5
8%
0%
39%
Over 16.5
8%
0%
34%
Over 17.5
8%
0%
26%
Over 18.5
8%
0%
24%
Over 19.5
4%
0%
24%
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Under 0.5
0%
0%
0%
Under 1.5
0%
7%
0%
Under 2.5
8%
13%
0%
Under 3.5
19%
20%
0%
Under 4.5
27%
20%
0%
Under 5.5
35%
27%
0%
Under 6.5
42%
33%
6%
Under 7.5
58%
47%
9%
Under 8.5
73%
53%
14%
Under 9.5
77%
67%
22%
Under 10.5
81%
80%
28%
Under 11.5
81%
87%
33%
Under 12.5
81%
87%
40%
Under 13.5
88%
87%
49%
Under 14.5
88%
87%
58%
Match Total Games (Hard Courts)
2026 Calendar Year
Last 12 Months
Total Games In A Set
3 Set Matches
5 Set Matches
Data Point
Daniel Altmaier
Zhizhen Zhang
Average
Average Games in a Set
9.22
9.8
9.51
Over 6.5
100%
100%
100%
Over 7.5
90%
84%
87%
Over 8.5
67%
74%
71%
Over 9.5
48%
47%
48%
Over 10.5
14%
26%
20%
Over 11.5
14%
26%
20%
Over 12.5
5%
26%
16%
Data Point
Daniel Altmaier
Zhizhen Zhang
Average
Over 12.5
100%
100%
100%
Over 13.5
100%
100%
100%
Over 14.5
100%
95%
98%
Over 15.5
95%
95%
95%
Over 16.5
81%
89%
85%
Over 17.5
71%
74%
73%
Over 18.5
57%
68%
63%
Over 19.5
52%
63%
58%
Over 20.5
48%
58%
53%
Over 21.5
33%
53%
43%
Over 22.5
33%
42%
38%
Over 23.5
19%
37%
28%
Over 24.5
19%
37%
28%
Over 25.5
19%
32%
26%
Over 26.5
14%
26%
20%
Over 27.5
14%
26%
20%
Over 28.5
14%
26%
20%
Over 29.5
10%
21%
16%
Data Point
Daniel Altmaier
Zhizhen Zhang
Average
Over 18.5
100%
100%
100%
Over 19.5
100%
100%
100%
Over 20.5
100%
100%
100%
Over 21.5
100%
100%
100%
Over 22.5
100%
100%
100%
Over 23.5
100%
100%
100%
Over 24.5
100%
100%
100%
Over 25.5
0%
100%
50%
Over 26.5
0%
100%
50%
Over 27.5
0%
100%
50%
Over 28.5
0%
100%
50%
Over 29.5
0%
100%
50%
Over 30.5
0%
100%
50%
Over 31.5
0%
0%
0%
Over 32.5
0%
0%
0%
Over 33.5
0%
0%
0%
Over 34.5
0%
0%
0%
Over 35.5
0%
0%
0%
Over 36.5
0%
0%
0%
Over 37.5
0%
0%
0%
Total Games In A Set
3 Set Matches
5 Set Matches
Data Point
Daniel Altmaier
Zhizhen Zhang
Average
Average Games in a Set
9.48
9.88
9.68
Over 6.5
98%
100%
99%
Over 7.5
91%
87%
89%
Over 8.5
77%
74%
76%
Over 9.5
43%
52%
48%
Over 10.5
17%
26%
22%
Over 11.5
17%
26%
22%
Over 12.5
9%
26%
18%
Data Point
Daniel Altmaier
Zhizhen Zhang
Average
Over 12.5
100%
100%
100%
Over 13.5
100%
100%
100%
Over 14.5
98%
96%
97%
Over 15.5
96%
96%
96%
Over 16.5
89%
91%
90%
Over 17.5
83%
78%
81%
Over 18.5
68%
70%
69%
Over 19.5
58%
61%
60%
Over 20.5
55%
57%
56%
Over 21.5
42%
52%
47%
Over 22.5
42%
43%
43%
Over 23.5
32%
39%
36%
Over 24.5
32%
39%
36%
Over 25.5
30%
35%
33%
Over 26.5
19%
30%
25%
Over 27.5
17%
26%
22%
Over 28.5
17%
26%
22%
Over 29.5
15%
22%
19%
Data Point
Daniel Altmaier
Zhizhen Zhang
Average
Over 18.5
100%
100%
100%
Over 19.5
100%
100%
100%
Over 20.5
100%
100%
100%
Over 21.5
100%
100%
100%
Over 22.5
100%
100%
100%
Over 23.5
100%
100%
100%
Over 24.5
100%
100%
100%
Over 25.5
75%
100%
88%
Over 26.5
75%
100%
88%
Over 27.5
75%
100%
88%
Over 28.5
75%
100%
88%
Over 29.5
75%
100%
88%
Over 30.5
75%
100%
88%
Over 31.5
75%
0%
38%
Over 32.5
75%
0%
38%
Over 33.5
75%
0%
38%
Over 34.5
75%
0%
38%
Over 35.5
75%
0%
38%
Over 36.5
50%
0%
25%
Over 37.5
25%
0%
13%
Break Points Won (Hard Courts)
2026 Calendar Year
Last 12 Months
3 Set Matches
5 Set Matches
Breaks Per Set
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Breaks Per Match
2.75
1.55
4.3
Over 0.5
100%
73%
100%
Over 1.5
0%
73%
100%
Over 2.5
0%
36%
78%
Over 3.5
0%
9%
59%
Over 4.5
0%
0%
59%
Over 5.5
0%
0%
17%
Over 6.5
0%
0%
17%
Over 7.5
0%
0%
0%
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Breaks Per Match
3
3
6
Over 0.5
0%
100%
100%
Over 1.5
0%
100%
100%
Over 2.5
0%
0%
100%
Over 3.5
0%
0%
100%
Over 4.5
0%
0%
100%
Over 5.5
0%
0%
100%
Over 6.5
0%
0%
0%
Over 7.5
0%
0%
0%
Over 8.5
0%
0%
0%
Over 9.5
0%
0%
0%
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Average Break-Points Converted (Set 1)
1.38
0.82
2.2
Average Break-Points Converted (Set 2)
1.38
0.64
2.02
Average Break-Points Converted (Set 3)
N/A
1
N/A
will Break Serve %
100%
60%
N/A
will not Break Serve %
63%
27%
N/A
Over 0.5
100%
73%
100%
Over 1.5
0%
27%
78%
Over 2.5
0%
0%
30%
Over 3.5
0%
0%
13%
Over 4.5
0%
0%
0%
Over 5.5
0%
0%
0%
Over 6.5
0%
0%
0%
Over 7.5
0%
0%
0%
Breaks Per Set data uses Set 1 as a sample.
3 Set Matches
5 Set Matches
Breaks Per Set
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Breaks Per Match
2.33
1.77
4.1
Over 0.5
77%
73%
100%
Over 1.5
54%
67%
95%
Over 2.5
35%
33%
73%
Over 3.5
15%
13%
50%
Over 4.5
8%
0%
37%
Over 5.5
4%
0%
24%
Over 6.5
0%
0%
20%
Over 7.5
0%
0%
10%
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Breaks Per Match
3
3
6
Over 0.5
0%
100%
100%
Over 1.5
0%
100%
100%
Over 2.5
0%
0%
100%
Over 3.5
0%
0%
100%
Over 4.5
0%
0%
100%
Over 5.5
0%
0%
100%
Over 6.5
0%
0%
25%
Over 7.5
0%
0%
13%
Over 8.5
0%
0%
0%
Over 9.5
0%
0%
0%
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Average Break-Points Converted (Set 1)
0.98
0.87
1.92
Average Break-Points Converted (Set 2)
0.87
0.73
1.41
Average Break-Points Converted (Set 3)
0.95
0.62
1.67
will Break Serve %
49%
52%
N/A
will not Break Serve %
51%
26%
N/A
Over 0.5
73%
67%
96%
Over 1.5
27%
33%
61%
Over 2.5
0%
0%
31%
Over 3.5
0%
0%
3%
Breaks Per Set data uses Set 1 as a sample.
Double Faults (Hard Courts)
2026 Calendar Year
Last 12 Months
3 Set Matches
5 Set Matches
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Double Faults Per Match
2.75
1.45
4.2
Over 0.5 (1+)
100%
73%
100%
Over 1.5 (2+)
75%
45%
88%
Over 2.5 (3+)
50%
27%
74%
Over 3.5 (4+)
25%
0%
65%
Over 4.5 (5+)
25%
0%
31%
Over 5.5 (6+)
0%
0%
31%
Over 6.5 (7+)
0%
0%
14%
Over 7.5 (8+)
0%
0%
5%
Over 8.5 (9+)
0%
0%
5%
Over 9.5 (10+)
0%
0%
0%
Over 10.5 (11+)
0%
0%
0%
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Double Faults Per Match
4
1
5
Over 0.5 (1+)
100%
100%
100%
Over 1.5 (2+)
100%
0%
100%
Over 2.5 (3+)
100%
0%
100%
Over 3.5 (4+)
100%
0%
50%
Over 4.5 (5+)
0%
0%
50%
Over 5.5 (6+)
0%
0%
50%
Over 6.5 (7+)
0%
0%
50%
Over 7.5 (8+)
0%
0%
0%
Over 8.5 (9+)
0%
0%
0%
Over 9.5 (10+)
0%
0%
0%
Over 10.5 (11+)
0%
0%
0%
Over 11.5 (12+)
0%
0%
N/A
3 Set Matches
5 Set Matches
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Double Faults Per Match
2.96
1.8
4.76
Over 0.5 (1+)
92%
73%
98%
Over 1.5 (2+)
73%
47%
93%
Over 2.5 (3+)
46%
27%
75%
Over 3.5 (4+)
35%
7%
58%
Over 4.5 (5+)
27%
7%
44%
Over 5.5 (6+)
12%
7%
40%
Over 6.5 (7+)
8%
7%
31%
Over 7.5 (8+)
4%
7%
22%
Over 8.5 (9+)
0%
0%
20%
Over 9.5 (10+)
0%
0%
10%
Over 10.5 (11+)
0%
0%
10%
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Double Faults Per Match
4
1
5
Over 0.5 (1+)
100%
100%
100%
Over 1.5 (2+)
100%
0%
100%
Over 2.5 (3+)
100%
0%
100%
Over 3.5 (4+)
100%
0%
50%
Over 4.5 (5+)
0%
0%
50%
Over 5.5 (6+)
0%
0%
50%
Over 6.5 (7+)
0%
0%
50%
Over 7.5 (8+)
0%
0%
0%
Over 8.5 (9+)
0%
0%
0%
Over 9.5 (10+)
0%
0%
0%
Over 10.5 (11+)
0%
0%
0%
Tie Breaks (Hard Courts)
2026 Calendar Year
Last 12 Months
3 Set Matches
5 Set Matches
Data Point
Daniel Altmaier
(Match)
(Match)
Zhizhen Zhang
(Match)
(Match)
Average
Tie Breaks Per Match
0.25
0.45
0.46
Over 0.5
0%
18%
9%
Over 1.5
0%
0%
0%
Over 2.5
0%
0%
0%
Under 0.5
100%
82%
91%
Under 1.5
100%
100%
100%
Under 2.5
100%
100%
100%
Data Point
Daniel Altmaier (Match)
Zhizhen Zhang (Match)
Average
Tie Breaks Per Match
1
1
1
Over 0.5
100%
100%
100%
Over 1.5
0%
0%
0%
Over 2.5
0%
0%
0%
Under 0.5
0%
0%
0%
Under 1.5
100%
100%
100%
Under 2.5
100%
100%
100%
3 Set Matches
5 Set Matches
Data Point
Daniel Altmaier
(Match)
(Match)
Zhizhen Zhang
(Match)
(Match)
Average
Tie Breaks Per Match
0.46
0.47
0.48
Over 0.5
19%
20%
20%
Over 1.5
0%
0%
0%
Over 2.5
0%
0%
0%
Under 0.5
81%
80%
81%
Under 1.5
100%
100%
100%
Under 2.5
100%
100%
100%
Data Point
Daniel Altmaier (Match)
Zhizhen Zhang (Match)
Average
Tie Breaks Per Match
0.25
1
0.63
Over 0.5
25%
100%
63%
Over 1.5
0%
0%
0%
Over 2.5
0%
0%
0%
Under 0.5
75%
0%
38%
Under 1.5
100%
100%
100%
Under 2.5
100%
100%
100%
Net Points Won (Hard Courts)
2026 Calendar Year
Last 12 Months
3 Set Matches
5 Set Matches
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Net Points Won Per Match
7
5.27
12.27
Over 4.5 (5+)
25%
18%
22%
Over 5.5 (6+)
0%
18%
9%
Over 6.5 (7+)
0%
9%
5%
Over 7.5 (8+)
0%
0%
0%
Over 8.5 (9+)
0%
0%
0%
Over 9.5 (10+)
0%
0%
0%
Over 10.5 (11+)
0%
0%
0%
Over 11.5 (12+)
0%
0%
0%
Over 14.5 (12+)
0%
0%
0%
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Net Point Won Per Match
8
10.5
18.5
Over 4.5 (5+)
100%
100%
100%
Over 5.5 (6+)
100%
100%
100%
Over 6.5 (7+)
0%
100%
50%
Over 7.5 (8+)
0%
100%
50%
Over 8.5 (9+)
0%
100%
50%
Over 9.5 (10+)
0%
100%
50%
Over 10.5 (11+)
0%
100%
50%
Over 11.5 (12+)
0%
0%
0%
Over 14.5 (15+)
0%
0%
0%
Over 19.5 (20+)
0%
0%
0%
Over 22.5 (23+)
0%
0%
0%
3 Set Matches
5 Set Matches
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Net Points Won Per Match
13.3
6.68
19.98
Over 4.5 (5+)
70%
36%
53%
Over 5.5 (6+)
60%
36%
48%
Over 6.5 (7+)
55%
29%
42%
Over 7.5 (8+)
50%
21%
36%
Over 8.5 (9+)
50%
21%
36%
Over 9.5 (10+)
45%
21%
33%
Over 10.5 (11+)
35%
21%
28%
Over 11.5 (12+)
30%
21%
26%
Over 14.5 (15+)
30%
0%
15%
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Net Points won Per Match
8
10.5
18.5
Over 4.5 (5+)
100%
100%
100%
Over 5.5 (6+)
100%
100%
100%
Over 6.5 (7+)
0%
100%
50%
Over 7.5 (8+)
0%
100%
50%
Over 8.5 (9+)
0%
100%
50%
Over 9.5 (10+)
0%
100%
50%
Over 10.5 (11+)
0%
100%
50%
Over 11.5 (12+)
0%
0%
0%
Over 14.5 (15+)
0%
0%
0%
Over 19.5 (20+)
0%
0%
0%
Over 22.5 (23+)
0%
0%
0%
Head-to-Head (Clay Courts)
Performance
Profile
Data Point
Daniel Altmaier
Zhizhen Zhang
Wins
H2H
H2H
1(50.0%)
1(50.0%)
Sets Won
H2H
H2H
2(40.0%)
3(60.0%)
Win Percentage
2026 Calendar Year
2026 Calendar Year
52.9%9 / 17 Matches
37.5%3 / 8 Matches
Win Percentage
Last 12 Months
Last 12 Months
52.2%12 / 23 Matches
37.5%3 / 8 Matches
Data Point
Daniel Altmaier
Zhizhen Zhang
Main Hand
Right-handed
Right-handed
Age
27
29
Birthday
September 12, 1998
October 16, 1996
Height
1.88m
1.93m
Weight
80kg
87kg
Win Percentage (Clay Courts)
2026 Calendar Year
Last 12 Months
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Wins
53%
38%
Match Wins (3 Sets)
53%
38%
Match Wins (5 Sets)
N/A
N/A
Wins in Straight Sets
29%
13%
Wins From Behind
20%
17%
Won At Least 1 Set
59%
63%
Set 1 Win
41%
38%
Set 2 Win
47%
38%
Set 3 Win
80%
50%
Set 4 Win
N/A
N/A
Set 5 Win
N/A
N/A
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Wins
52%
38%
Match Wins (3 Sets)
52%
38%
Match Wins (5 Sets)
100%
N/A
Wins in Straight Sets
35%
13%
Wins From Behind
15%
17%
Won At Least 1 Set
57%
63%
Set 1 Win
43%
38%
Set 2 Win
48%
38%
Set 3 Win
67%
50%
Set 4 Win
100%
N/A
Set 5 Win
100%
N/A
Aces (Clay Courts)
2026 Calendar Year
Last 12 Months
Milestones
Over
Under
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Aces Per Match
5.53
7.00
12.53
Most Aces in a match
76%
50%
N/A
1+
100%
100%
100%
2+
88%
88%
97%
3+
82%
88%
88%
4+
65%
75%
85%
5+
53%
75%
80%
6+
35%
50%
77%
7+
35%
50%
74%
8+
29%
50%
67%
9+
24%
38%
52%
10+
18%
38%
49%
15+
0%
0%
28%
20+
0%
0%
7%
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Over 0.5
100%
100%
100%
Over 1.5
88%
88%
97%
Over 2.5
82%
88%
88%
Over 3.5
65%
75%
85%
Over 4.5
53%
75%
80%
Over 5.5
47%
63%
77%
Over 6.5
35%
50%
74%
Over 7.5
29%
50%
67%
Over 8.5
24%
38%
52%
Over 9.5
18%
38%
49%
Over 10.5
12%
25%
37%
Over 11.5
0%
13%
31%
Over 12.5
0%
0%
28%
Over 13.5
0%
0%
28%
Over 14.5
0%
0%
28%
Over 15.5
0%
0%
22%
Over 16.5
0%
0%
22%
Over 17.5
0%
0%
13%
Over 18.5
0%
0%
13%
Over 19.5
0%
0%
7%
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Under 0.5
0%
0%
0%
Under 1.5
12%
13%
3%
Under 2.5
18%
13%
13%
Under 3.5
35%
25%
16%
Under 4.5
47%
25%
21%
Under 5.5
53%
38%
24%
Under 6.5
65%
50%
27%
Under 7.5
71%
50%
33%
Under 8.5
76%
63%
49%
Under 9.5
82%
63%
52%
Under 10.5
88%
75%
63%
Under 11.5
100%
88%
69%
Under 12.5
100%
100%
72%
Under 13.5
100%
100%
72%
Under 14.5
100%
100%
72%
Milestones
Over
Under
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Aces Per Match
5.7
7
12.70
Most Aces in a match
58%
57%
N/A
1+
100%
100%
100%
2+
91%
88%
98%
3+
83%
88%
90%
4+
70%
75%
88%
5+
61%
75%
83%
6+
39%
50%
81%
7+
39%
50%
79%
8+
30%
50%
70%
9+
17%
38%
53%
10+
13%
38%
51%
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Over 0.5
100%
100%
100%
Over 1.5
91%
88%
98%
Over 2.5
83%
88%
90%
Over 3.5
70%
75%
88%
Over 4.5
61%
75%
83%
Over 5.5
57%
63%
81%
Over 6.5
39%
50%
79%
Over 7.5
30%
50%
70%
Over 8.5
17%
38%
53%
Over 9.5
13%
38%
51%
Over 10.5
9%
25%
40%
Over 11.5
0%
13%
34%
Over 12.5
0%
0%
32%
Over 13.5
0%
0%
32%
Over 14.5
0%
0%
30%
Over 15.5
0%
0%
21%
Over 16.5
0%
0%
21%
Over 17.5
0%
0%
13%
Over 18.5
0%
0%
13%
Over 19.5
0%
0%
7%
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Under 0.5
0%
0%
0%
Under 1.5
9%
13%
2%
Under 2.5
17%
13%
11%
Under 3.5
30%
25%
13%
Under 4.5
39%
25%
18%
Under 5.5
43%
38%
20%
Under 6.5
61%
50%
22%
Under 7.5
70%
50%
30%
Under 8.5
83%
63%
48%
Under 9.5
87%
63%
50%
Under 10.5
91%
75%
60%
Under 11.5
100%
88%
67%
Under 12.5
100%
100%
69%
Under 13.5
100%
100%
69%
Under 14.5
100%
100%
71%
Match Total Games (Clay Courts)
2026 Calendar Year
Last 12 Months
Total Games In A Set
3 Set Matches
5 Set Matches
Data Point
Daniel Altmaier
Zhizhen Zhang
Average
Average Games in a Set
9.22
9.8
9.51
Over 6.5
100%
100%
100%
Over 7.5
90%
84%
87%
Over 8.5
67%
74%
71%
Over 9.5
48%
47%
48%
Over 10.5
14%
26%
20%
Over 11.5
14%
26%
20%
Over 12.5
5%
26%
16%
Data Point
Daniel Altmaier
Zhizhen Zhang
Average
Over 12.5
100%
100%
100%
Over 13.5
100%
100%
100%
Over 14.5
100%
95%
98%
Over 15.5
95%
95%
95%
Over 16.5
81%
89%
85%
Over 17.5
71%
74%
73%
Over 18.5
57%
68%
63%
Over 19.5
52%
63%
58%
Over 20.5
48%
58%
53%
Over 21.5
33%
53%
43%
Over 22.5
33%
42%
38%
Over 23.5
19%
37%
28%
Over 24.5
19%
37%
28%
Over 25.5
19%
32%
26%
Over 26.5
14%
26%
20%
Over 27.5
14%
26%
20%
Over 28.5
14%
26%
20%
Over 29.5
10%
21%
16%
Data Point
Daniel Altmaier
Zhizhen Zhang
Average
Over 18.5
100%
100%
100%
Over 19.5
100%
100%
100%
Over 20.5
100%
100%
100%
Over 21.5
100%
100%
100%
Over 22.5
100%
100%
100%
Over 23.5
100%
100%
100%
Over 24.5
100%
100%
100%
Over 25.5
0%
100%
50%
Over 26.5
0%
100%
50%
Over 27.5
0%
100%
50%
Over 28.5
0%
100%
50%
Over 29.5
0%
100%
50%
Over 30.5
0%
100%
50%
Over 31.5
0%
0%
0%
Over 32.5
0%
0%
0%
Over 33.5
0%
0%
0%
Over 34.5
0%
0%
0%
Over 35.5
0%
0%
0%
Over 36.5
0%
0%
0%
Over 37.5
0%
0%
0%
Total Games In A Set
3 Set Matches
5 Set Matches
Data Point
Daniel Altmaier
Zhizhen Zhang
Average
Average Games in a Set
9.48
9.88
9.68
Over 6.5
98%
100%
99%
Over 7.5
91%
87%
89%
Over 8.5
77%
74%
76%
Over 9.5
43%
52%
48%
Over 10.5
17%
26%
22%
Over 11.5
17%
26%
22%
Over 12.5
9%
26%
18%
Data Point
Daniel Altmaier
Zhizhen Zhang
Average
Over 12.5
100%
100%
100%
Over 13.5
100%
100%
100%
Over 14.5
98%
96%
97%
Over 15.5
96%
96%
96%
Over 16.5
89%
91%
90%
Over 17.5
83%
78%
81%
Over 18.5
68%
70%
69%
Over 19.5
58%
61%
60%
Over 20.5
55%
57%
56%
Over 21.5
42%
52%
47%
Over 22.5
42%
43%
43%
Over 23.5
32%
39%
36%
Over 24.5
32%
39%
36%
Over 25.5
30%
35%
33%
Over 26.5
19%
30%
25%
Over 27.5
17%
26%
22%
Over 28.5
17%
26%
22%
Over 29.5
15%
22%
19%
Data Point
Daniel Altmaier
Zhizhen Zhang
Average
Over 18.5
100%
100%
100%
Over 19.5
100%
100%
100%
Over 20.5
100%
100%
100%
Over 21.5
100%
100%
100%
Over 22.5
100%
100%
100%
Over 23.5
100%
100%
100%
Over 24.5
100%
100%
100%
Over 25.5
75%
100%
88%
Over 26.5
75%
100%
88%
Over 27.5
75%
100%
88%
Over 28.5
75%
100%
88%
Over 29.5
75%
100%
88%
Over 30.5
75%
100%
88%
Over 31.5
75%
0%
38%
Over 32.5
75%
0%
38%
Over 33.5
75%
0%
38%
Over 34.5
75%
0%
38%
Over 35.5
75%
0%
38%
Over 36.5
50%
0%
25%
Over 37.5
25%
0%
13%
Break Points Won (Clay Courts)
2026 Calendar Year
Last 12 Months
3 Set Matches
5 Set Matches
Breaks Per Set
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Breaks Per Match
1.88
9.5
11.38
Over 0.5
24%
100%
100%
Over 1.5
0%
100%
100%
Over 2.5
0%
100%
100%
Over 3.5
0%
100%
88%
Over 4.5
0%
100%
50%
Over 5.5
0%
100%
50%
Over 6.5
0%
100%
50%
Over 7.5
0%
63%
50%
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Breaks Per Match
N/A
N/A
N/A
Over 0.5
N/A
N/A
100%
Over 1.5
N/A
N/A
100%
Over 2.5
N/A
N/A
100%
Over 3.5
N/A
N/A
100%
Over 4.5
N/A
N/A
100%
Over 5.5
N/A
N/A
100%
Over 6.5
N/A
N/A
0%
Over 7.5
N/A
N/A
0%
Over 8.5
N/A
N/A
0%
Over 9.5
N/A
N/A
0%
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Average Break-Points Converted (Set 1)
1.12
4.5
5.62
Average Break-Points Converted (Set 2)
0.76
5
5.76
Average Break-Points Converted (Set 3)
5
5
10
will Break Serve %
12%
54%
N/A
will not Break Serve %
30%
46%
N/A
Over 0.5
24%
100%
100%
Over 1.5
0%
100%
100%
Over 2.5
0%
100%
62%
Over 3.5
0%
63%
50%
Over 4.5
0%
63%
50%
Over 5.5
0%
63%
50%
Over 6.5
0%
0%
50%
Over 7.5
0%
0%
50%
Breaks Per Set data uses Set 1 as a sample.
3 Set Matches
5 Set Matches
Breaks Per Set
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Breaks Per Match
1.98
9.5
11.48
Over 0.5
35%
100%
100%
Over 1.5
17%
100%
100%
Over 2.5
17%
100%
100%
Over 3.5
4%
100%
85%
Over 4.5
0%
100%
55%
Over 5.5
0%
100%
55%
Over 6.5
0%
100%
52%
Over 7.5
0%
63%
52%
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Breaks Per Match
3.5
N/A
2.5
Over 0.5
100%
N/A
100%
Over 1.5
100%
N/A
100%
Over 2.5
100%
N/A
100%
Over 3.5
100%
N/A
100%
Over 4.5
100%
N/A
100%
Over 5.5
33%
N/A
100%
Over 6.5
0%
N/A
25%
Over 7.5
0%
N/A
13%
Over 8.5
0%
N/A
0%
Over 9.5
0%
N/A
0%
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Average Break-Points Converted (Set 1)
1.09
4.5
1.92
Average Break-Points Converted (Set 2)
0.8
5
1.41
Average Break-Points Converted (Set 3)
0.67
5
1.67
will Break Serve %
16%
54%
N/A
will not Break Serve %
33%
46%
N/A
Over 0.5
35%
100%
96%
Over 1.5
4%
100%
61%
Over 2.5
0%
100%
31%
Over 3.5
0%
63%
3%
Breaks Per Set data uses Set 1 as a sample.
Double Faults (Clay Courts)
2026 Calendar Year
Last 12 Months
3 Set Matches
5 Set Matches
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Double Faults Per Match
2
2.5
4.5
Over 0.5 (1+)
82%
88%
94%
Over 1.5 (2+)
53%
88%
94%
Over 2.5 (3+)
29%
50%
86%
Over 3.5 (4+)
18%
25%
68%
Over 4.5 (5+)
12%
0%
52%
Over 5.5 (6+)
6%
0%
28%
Over 6.5 (7+)
0%
0%
19%
Over 7.5 (8+)
0%
0%
19%
Over 8.5 (9+)
0%
0%
3%
Over 9.5 (10+)
0%
0%
0%
Over 10.5 (11+)
0%
0%
0%
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Double Faults Per Match
N/A
N/A
N/A
Over 0.5 (1+)
N/A
N/A
N/A
Over 1.5 (2+)
N/A
N/A
N/A
Over 2.5 (3+)
N/A
N/A
N/A
Over 3.5 (4+)
N/A
N/A
N/A
Over 4.5 (5+)
N/A
N/A
N/A
Over 5.5 (6+)
N/A
N/A
N/A
Over 6.5 (7+)
N/A
N/A
N/A
Over 7.5 (8+)
N/A
N/A
N/A
Over 8.5 (9+)
N/A
N/A
N/A
Over 9.5 (10+)
N/A
N/A
N/A
Over 10.5 (11+)
N/A
N/A
N/A
Over 11.5 (12+)
0%
0%
N/A
3 Set Matches
5 Set Matches
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Double Faults Per Match
1.91
2.5
4.41
Over 0.5 (1+)
78%
88%
96%
Over 1.5 (2+)
57%
88%
96%
Over 2.5 (3+)
30%
50%
89%
Over 3.5 (4+)
13%
25%
73%
Over 4.5 (5+)
9%
0%
55%
Over 5.5 (6+)
4%
0%
28%
Over 6.5 (7+)
0%
0%
17%
Over 7.5 (8+)
0%
0%
17%
Over 8.5 (9+)
0%
0%
2%
Over 9.5 (10+)
0%
0%
0%
Over 10.5 (11+)
0%
0%
0%
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Double Faults Per Match
4
N/A
3
Over 0.5 (1+)
100%
N/A
50%
Over 1.5 (2+)
100%
N/A
50%
Over 2.5 (3+)
100%
N/A
50%
Over 3.5 (4+)
100%
N/A
50%
Over 4.5 (5+)
0%
N/A
33%
Over 5.5 (6+)
0%
N/A
16%
Over 6.5 (7+)
0%
N/A
16%
Over 7.5 (8+)
0%
N/A
16%
Over 8.5 (9+)
0%
N/A
16%
Over 9.5 (10+)
0%
N/A
16%
Over 10.5 (11+)
0%
N/A
N/A
Tie Breaks (Clay Courts)
2026 Calendar Year
Last 12 Months
3 Set Matches
5 Set Matches
Data Point
Daniel Altmaier
(Match)
(Match)
Zhizhen Zhang
(Match)
(Match)
Average
Tie Breaks Per Match
0.35
0.75
0.46
Over 0.5
12%
13%
13%
Over 1.5
6%
0%
3%
Over 2.5
0%
0%
0%
Under 0.5
88%
88%
88%
Under 1.5
94%
100%
97%
Under 2.5
100%
100%
100%
Data Point
Daniel Altmaier (Match)
Zhizhen Zhang (Match)
Average
Tie Breaks Per Match
1
1
1
Over 0.5
100%
100%
100%
Over 1.5
0%
0%
0%
Over 2.5
0%
0%
0%
Under 0.5
0%
0%
0%
Under 1.5
100%
100%
100%
Under 2.5
100%
100%
100%
3 Set Matches
5 Set Matches
Data Point
Daniel Altmaier
(Match)
(Match)
Zhizhen Zhang
(Match)
(Match)
Average
Tie Breaks Per Match
0.3
0.75
0.48
Over 0.5
9%
13%
11%
Over 1.5
4%
0%
2%
Over 2.5
0%
0%
0%
Under 0.5
91%
88%
90%
Under 1.5
96%
100%
98%
Under 2.5
100%
100%
100%
Data Point
Daniel Altmaier (Match)
Zhizhen Zhang (Match)
Average
Tie Breaks Per Match
0.25
1
0.63
Over 0.5
25%
100%
63%
Over 1.5
0%
0%
0%
Over 2.5
0%
0%
0%
Under 0.5
75%
0%
38%
Under 1.5
100%
100%
100%
Under 2.5
100%
100%
100%
Net Points Won (Clay Courts)
2026 Calendar Year
Last 12 Months
3 Set Matches
5 Set Matches
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Net Points Won Per Match
9.29
5.42
14.71
Over 4.5 (5+)
64%
50%
57%
Over 5.5 (6+)
64%
33%
49%
Over 6.5 (7+)
50%
33%
42%
Over 7.5 (8+)
43%
33%
38%
Over 8.5 (9+)
43%
33%
38%
Over 9.5 (10+)
43%
17%
30%
Over 10.5 (11+)
43%
17%
30%
Over 11.5 (12+)
29%
17%
23%
Over 14.5 (12+)
14%
17%
16%
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Net Point Won Per Match
N/A
N/A
N/A
Over 4.5 (5+)
N/A
N/A
N/A
Over 5.5 (6+)
N/A
N/A
N/A
Over 6.5 (7+)
N/A
N/A
N/A
Over 7.5 (8+)
N/A
N/A
N/A
Over 8.5 (9+)
N/A
N/A
N/A
Over 9.5 (10+)
N/A
N/A
N/A
Over 10.5 (11+)
N/A
N/A
N/A
Over 11.5 (12+)
N/A
N/A
N/A
Over 14.5 (15+)
N/A
N/A
N/A
Over 19.5 (20+)
N/A
N/A
N/A
Over 22.5 (23+)
N/A
N/A
N/A
3 Set Matches
5 Set Matches
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Net Points Won Per Match
9.62
5.42
15.04
Over 4.5 (5+)
70%
50%
60%
Over 5.5 (6+)
60%
33%
47%
Over 6.5 (7+)
50%
33%
42%
Over 7.5 (8+)
40%
33%
37%
Over 8.5 (9+)
40%
33%
37%
Over 9.5 (10+)
40%
17%
29%
Over 10.5 (11+)
35%
17%
26%
Over 11.5 (12+)
25%
17%
21%
Over 14.5 (15+)
10%
17%
14%
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Net Points won Per Match
17.67
N/A
16.67
Over 4.5 (5+)
100%
N/A
50%
Over 5.5 (6+)
100%
N/A
50%
Over 6.5 (7+)
100%
N/A
50%
Over 7.5 (8+)
100%
N/A
50%
Over 8.5 (9+)
100%
N/A
50%
Over 9.5 (10+)
100%
N/A
50%
Over 10.5 (11+)
100%
N/A
50%
Over 11.5 (12+)
100%
N/A
50%
Over 14.5 (15+)
67%
N/A
33%
Over 19.5 (20+)
67%
N/A
33%
Over 22.5 (23+)
33%
N/A
16%
Head-to-Head (Grass Courts)
Performance
Profile
Data Point
Daniel Altmaier
Zhizhen Zhang
Wins
H2H
H2H
0(0%)
0(0%)
Sets Won
H2H
H2H
0(0%)
0(0%)
Win Percentage
2026 Calendar Year
2026 Calendar Year
N/A0 / 0 Matches
N/A0 / 0 Matches
Win Percentage
Last 12 Months
Last 12 Months
25.0%1 / 4 Matches
N/A0 / 0 Matches
Data Point
Daniel Altmaier
Zhizhen Zhang
Main Hand
Right-handed
Right-handed
Age
27
29
Birthday
September 12, 1998
October 16, 1996
Height
1.88m
1.93m
Weight
80kg
87kg
Win Percentage (Grass Courts)
2026 Calendar Year
Last 12 Months
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Wins
N/A
N/A
Match Wins (3 Sets)
N/A
N/A
Match Wins (5 Sets)
N/A
N/A
Wins in Straight Sets
N/A
N/A
Wins From Behind
N/A
N/A
Won At Least 1 Set
N/A
N/A
Set 1 Win
N/A
N/A
Set 2 Win
N/A
N/A
Set 3 Win
N/A
N/A
Set 4 Win
N/A
N/A
Set 5 Win
N/A
N/A
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Wins
25%
N/A
Match Wins (3 Sets)
25%
N/A
Match Wins (5 Sets)
N/A
N/A
Wins in Straight Sets
0%
N/A
Wins From Behind
0%
N/A
Won At Least 1 Set
25%
N/A
Set 1 Win
25%
N/A
Set 2 Win
0%
N/A
Set 3 Win
50%
N/A
Set 4 Win
N/A
N/A
Set 5 Win
100%
N/A
Aces (Grass Courts)
2026 Calendar Year
Last 12 Months
Milestones
Over
Under
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Aces Per Match
N/A
N/A
N/A
Most Aces in a match
N/A
N/A
N/A
1+
N/A
N/A
N/A
2+
N/A
N/A
N/A
3+
N/A
N/A
N/A
4+
N/A
N/A
N/A
5+
N/A
N/A
N/A
6+
N/A
N/A
N/A
7+
N/A
N/A
N/A
8+
N/A
N/A
N/A
9+
N/A
N/A
N/A
10+
N/A
N/A
N/A
15+
N/A
N/A
N/A
20+
N/A
N/A
N/A
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Over 0.5
N/A
N/A
N/A
Over 1.5
N/A
N/A
N/A
Over 2.5
N/A
N/A
N/A
Over 3.5
N/A
N/A
N/A
Over 4.5
N/A
N/A
N/A
Over 5.5
N/A
N/A
N/A
Over 6.5
N/A
N/A
N/A
Over 7.5
N/A
N/A
N/A
Over 8.5
N/A
N/A
N/A
Over 9.5
N/A
N/A
N/A
Over 10.5
N/A
N/A
N/A
Over 11.5
N/A
N/A
N/A
Over 12.5
N/A
N/A
N/A
Over 13.5
N/A
N/A
N/A
Over 14.5
N/A
N/A
N/A
Over 15.5
N/A
N/A
N/A
Over 16.5
N/A
N/A
N/A
Over 17.5
N/A
N/A
N/A
Over 18.5
N/A
N/A
N/A
Over 19.5
N/A
N/A
N/A
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Under 0.5
N/A
N/A
N/A
Under 1.5
N/A
N/A
N/A
Under 2.5
N/A
N/A
N/A
Under 3.5
N/A
N/A
N/A
Under 4.5
N/A
N/A
N/A
Under 5.5
N/A
N/A
N/A
Under 6.5
N/A
N/A
N/A
Under 7.5
N/A
N/A
N/A
Under 8.5
N/A
N/A
N/A
Under 9.5
N/A
N/A
N/A
Under 10.5
N/A
N/A
N/A
Under 11.5
N/A
N/A
N/A
Under 12.5
N/A
N/A
N/A
Under 13.5
N/A
N/A
N/A
Under 14.5
N/A
N/A
N/A
Milestones
Over
Under
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Aces Per Match
6.25
N/A
N/A
Most Aces in a match
58%
57%
N/A
1+
100%
N/A
50%
2+
100%
N/A
50%
3+
100%
N/A
50%
4+
100%
N/A
50%
5+
100%
N/A
50%
6+
25%
N/A
50%
7+
25%
N/A
37%
8+
25%
N/A
37%
9+
25%
N/A
37%
10+
25%
N/A
37%
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Over 0.5
100%
N/A
50%
Over 1.5
100%
N/A
50%
Over 2.5
100%
N/A
50%
Over 3.5
100%
N/A
50%
Over 4.5
100%
N/A
50%
Over 5.5
25%
N/A
50%
Over 6.5
25%
N/A
37%
Over 7.5
25%
N/A
37%
Over 8.5
25%
N/A
37%
Over 9.5
25%
N/A
37%
Over 10.5
0%
N/A
37%
Over 11.5
0%
N/A
25%
Over 12.5
0%
N/A
N/A
Over 13.5
0%
N/A
N/A
Over 14.5
0%
N/A
N/A
Over 15.5
0%
N/A
N/A
Over 16.5
0%
N/A
N/A
Over 17.5
0%
N/A
N/A
Over 18.5
0%
N/A
N/A
Over 19.5
0%
N/A
N/A
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Under 0.5
0%
N/A
N/A
Under 1.5
0%
N/A
N/A
Under 2.5
0%
N/A
N/A
Under 3.5
0%
N/A
N/A
Under 4.5
0%
N/A
N/A
Under 5.5
75%
N/A
N/A
Under 6.5
75%
N/A
12%
Under 7.5
75%
N/A
12%
Under 8.5
75%
N/A
12%
Under 9.5
75%
N/A
12%
Under 10.5
100%
N/A
12%
Under 11.5
100%
N/A
25%
Under 12.5
100%
N/A
50%
Under 13.5
100%
N/A
50%
Under 14.5
100%
N/A
50%
Match Total Games (Grass Courts)
2026 Calendar Year
Last 12 Months
Total Games In A Set
3 Set Matches
5 Set Matches
Data Point
Daniel Altmaier
Zhizhen Zhang
Average
Average Games in a Set
9.22
9.8
9.51
Over 6.5
100%
100%
100%
Over 7.5
90%
84%
87%
Over 8.5
67%
74%
71%
Over 9.5
48%
47%
48%
Over 10.5
14%
26%
20%
Over 11.5
14%
26%
20%
Over 12.5
5%
26%
16%
Data Point
Daniel Altmaier
Zhizhen Zhang
Average
Over 12.5
100%
100%
100%
Over 13.5
100%
100%
100%
Over 14.5
100%
95%
98%
Over 15.5
95%
95%
95%
Over 16.5
81%
89%
85%
Over 17.5
71%
74%
73%
Over 18.5
57%
68%
63%
Over 19.5
52%
63%
58%
Over 20.5
48%
58%
53%
Over 21.5
33%
53%
43%
Over 22.5
33%
42%
38%
Over 23.5
19%
37%
28%
Over 24.5
19%
37%
28%
Over 25.5
19%
32%
26%
Over 26.5
14%
26%
20%
Over 27.5
14%
26%
20%
Over 28.5
14%
26%
20%
Over 29.5
10%
21%
16%
Data Point
Daniel Altmaier
Zhizhen Zhang
Average
Over 18.5
100%
100%
100%
Over 19.5
100%
100%
100%
Over 20.5
100%
100%
100%
Over 21.5
100%
100%
100%
Over 22.5
100%
100%
100%
Over 23.5
100%
100%
100%
Over 24.5
100%
100%
100%
Over 25.5
0%
100%
50%
Over 26.5
0%
100%
50%
Over 27.5
0%
100%
50%
Over 28.5
0%
100%
50%
Over 29.5
0%
100%
50%
Over 30.5
0%
100%
50%
Over 31.5
0%
0%
0%
Over 32.5
0%
0%
0%
Over 33.5
0%
0%
0%
Over 34.5
0%
0%
0%
Over 35.5
0%
0%
0%
Over 36.5
0%
0%
0%
Over 37.5
0%
0%
0%
Total Games In A Set
3 Set Matches
5 Set Matches
Data Point
Daniel Altmaier
Zhizhen Zhang
Average
Average Games in a Set
9.48
9.88
9.68
Over 6.5
98%
100%
99%
Over 7.5
91%
87%
89%
Over 8.5
77%
74%
76%
Over 9.5
43%
52%
48%
Over 10.5
17%
26%
22%
Over 11.5
17%
26%
22%
Over 12.5
9%
26%
18%
Data Point
Daniel Altmaier
Zhizhen Zhang
Average
Over 12.5
100%
100%
100%
Over 13.5
100%
100%
100%
Over 14.5
98%
96%
97%
Over 15.5
96%
96%
96%
Over 16.5
89%
91%
90%
Over 17.5
83%
78%
81%
Over 18.5
68%
70%
69%
Over 19.5
58%
61%
60%
Over 20.5
55%
57%
56%
Over 21.5
42%
52%
47%
Over 22.5
42%
43%
43%
Over 23.5
32%
39%
36%
Over 24.5
32%
39%
36%
Over 25.5
30%
35%
33%
Over 26.5
19%
30%
25%
Over 27.5
17%
26%
22%
Over 28.5
17%
26%
22%
Over 29.5
15%
22%
19%
Data Point
Daniel Altmaier
Zhizhen Zhang
Average
Over 18.5
100%
100%
100%
Over 19.5
100%
100%
100%
Over 20.5
100%
100%
100%
Over 21.5
100%
100%
100%
Over 22.5
100%
100%
100%
Over 23.5
100%
100%
100%
Over 24.5
100%
100%
100%
Over 25.5
75%
100%
88%
Over 26.5
75%
100%
88%
Over 27.5
75%
100%
88%
Over 28.5
75%
100%
88%
Over 29.5
75%
100%
88%
Over 30.5
75%
100%
88%
Over 31.5
75%
0%
38%
Over 32.5
75%
0%
38%
Over 33.5
75%
0%
38%
Over 34.5
75%
0%
38%
Over 35.5
75%
0%
38%
Over 36.5
50%
0%
25%
Over 37.5
25%
0%
13%
Break Points Won (Grass Courts)
2026 Calendar Year
Last 12 Months
3 Set Matches
5 Set Matches
Breaks Per Set
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Breaks Per Match
N/A
N/A
N/A
Over 0.5
N/A
N/A
N/A
Over 1.5
N/A
N/A
N/A
Over 2.5
N/A
N/A
N/A
Over 3.5
N/A
N/A
N/A
Over 4.5
N/A
N/A
N/A
Over 5.5
N/A
N/A
N/A
Over 6.5
N/A
N/A
N/A
Over 7.5
N/A
N/A
N/A
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Breaks Per Match
N/A
N/A
N/A
Over 0.5
N/A
N/A
100%
Over 1.5
N/A
N/A
100%
Over 2.5
N/A
N/A
100%
Over 3.5
N/A
N/A
100%
Over 4.5
N/A
N/A
100%
Over 5.5
N/A
N/A
100%
Over 6.5
N/A
N/A
0%
Over 7.5
N/A
N/A
0%
Over 8.5
N/A
N/A
0%
Over 9.5
N/A
N/A
0%
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Average Break-Points Converted (Set 1)
N/A
N/A
N/A
Average Break-Points Converted (Set 2)
N/A
N/A
N/A
Average Break-Points Converted (Set 3)
N/A
N/A
N/A
will Break Serve %
N/A
N/A
N/A
will not Break Serve %
N/A
N/A
N/A
Over 0.5
N/A
N/A
N/A
Over 1.5
N/A
N/A
N/A
Over 2.5
N/A
N/A
N/A
Over 3.5
N/A
N/A
N/A
Over 4.5
N/A
N/A
N/A
Over 5.5
N/A
N/A
N/A
Over 6.5
N/A
N/A
N/A
Over 7.5
N/A
N/A
N/A
Breaks Per Set data uses Set 1 as a sample.
3 Set Matches
5 Set Matches
Breaks Per Set
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Breaks Per Match
2.12
N/A
1.12
Over 0.5
75%
N/A
50%
Over 1.5
25%
N/A
50%
Over 2.5
25%
N/A
37%
Over 3.5
0%
N/A
25%
Over 4.5
0%
N/A
25%
Over 5.5
0%
N/A
12%
Over 6.5
0%
N/A
12%
Over 7.5
0%
N/A
N/A
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Breaks Per Match
N/A
N/A
N/A
Over 0.5
N/A
N/A
100%
Over 1.5
N/A
N/A
100%
Over 2.5
N/A
N/A
100%
Over 3.5
N/A
N/A
100%
Over 4.5
N/A
N/A
100%
Over 5.5
N/A
N/A
100%
Over 6.5
N/A
N/A
25%
Over 7.5
N/A
N/A
13%
Over 8.5
N/A
N/A
0%
Over 9.5
N/A
N/A
0%
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Average Break-Points Converted (Set 1)
0.62
N/A
1.92
Average Break-Points Converted (Set 2)
1
N/A
1.41
Average Break-Points Converted (Set 3)
1
N/A
1.67
will Break Serve %
13%
N/A
N/A
will not Break Serve %
29%
N/A
N/A
Over 0.5
25%
N/A
96%
Over 1.5
0%
N/A
61%
Over 2.5
0%
N/A
31%
Over 3.5
0%
N/A
3%
Breaks Per Set data uses Set 1 as a sample.
Double Faults (Grass Courts)
2026 Calendar Year
Last 12 Months
3 Set Matches
5 Set Matches
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Double Faults Per Match
N/A
N/A
N/A
Over 0.5 (1+)
N/A
N/A
N/A
Over 1.5 (2+)
N/A
N/A
N/A
Over 2.5 (3+)
N/A
N/A
N/A
Over 3.5 (4+)
N/A
N/A
N/A
Over 4.5 (5+)
N/A
N/A
N/A
Over 5.5 (6+)
N/A
N/A
N/A
Over 6.5 (7+)
N/A
N/A
N/A
Over 7.5 (8+)
N/A
N/A
N/A
Over 8.5 (9+)
N/A
N/A
N/A
Over 9.5 (10+)
N/A
N/A
N/A
Over 10.5 (11+)
N/A
N/A
N/A
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Double Faults Per Match
N/A
N/A
N/A
Over 0.5 (1+)
N/A
N/A
N/A
Over 1.5 (2+)
N/A
N/A
N/A
Over 2.5 (3+)
N/A
N/A
N/A
Over 3.5 (4+)
N/A
N/A
N/A
Over 4.5 (5+)
N/A
N/A
N/A
Over 5.5 (6+)
N/A
N/A
N/A
Over 6.5 (7+)
N/A
N/A
N/A
Over 7.5 (8+)
N/A
N/A
N/A
Over 8.5 (9+)
N/A
N/A
N/A
Over 9.5 (10+)
N/A
N/A
N/A
Over 10.5 (11+)
N/A
N/A
N/A
Over 11.5 (12+)
0%
0%
N/A
3 Set Matches
5 Set Matches
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Double Faults Per Match
3.25
N/A
N/A
Over 0.5 (1+)
75%
N/A
N/A
Over 1.5 (2+)
75%
N/A
N/A
Over 2.5 (3+)
75%
N/A
N/A
Over 3.5 (4+)
25%
N/A
N/A
Over 4.5 (5+)
25%
N/A
N/A
Over 5.5 (6+)
25%
N/A
N/A
Over 6.5 (7+)
25%
N/A
N/A
Over 7.5 (8+)
0%
N/A
N/A
Over 8.5 (9+)
0%
N/A
N/A
Over 9.5 (10+)
0%
N/A
N/A
Over 10.5 (11+)
0%
N/A
N/A
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Double Faults Per Match
N/A
N/A
N/A
Over 0.5 (1+)
N/A
N/A
N/A
Over 1.5 (2+)
N/A
N/A
N/A
Over 2.5 (3+)
N/A
N/A
N/A
Over 3.5 (4+)
N/A
N/A
N/A
Over 4.5 (5+)
N/A
N/A
N/A
Over 5.5 (6+)
N/A
N/A
N/A
Over 6.5 (7+)
N/A
N/A
N/A
Over 7.5 (8+)
N/A
N/A
N/A
Over 8.5 (9+)
N/A
N/A
N/A
Over 9.5 (10+)
N/A
N/A
N/A
Over 10.5 (11+)
N/A
N/A
N/A
Tie Breaks (Grass Courts)
2026 Calendar Year
Last 12 Months
3 Set Matches
5 Set Matches
Data Point
Daniel Altmaier
(Match)
(Match)
Zhizhen Zhang
(Match)
(Match)
Average
Tie Breaks Per Match
N/A
N/A
0.46
Over 0.5
N/A
N/A
N/A
Over 1.5
N/A
N/A
N/A
Over 2.5
N/A
N/A
N/A
Under 0.5
N/A
N/A
N/A
Under 1.5
N/A
N/A
N/A
Under 2.5
N/A
N/A
N/A
Data Point
Daniel Altmaier (Match)
Zhizhen Zhang (Match)
Average
Tie Breaks Per Match
1
1
1
Over 0.5
100%
100%
100%
Over 1.5
0%
0%
0%
Over 2.5
0%
0%
0%
Under 0.5
0%
0%
0%
Under 1.5
100%
100%
100%
Under 2.5
100%
100%
100%
3 Set Matches
5 Set Matches
Data Point
Daniel Altmaier
(Match)
(Match)
Zhizhen Zhang
(Match)
(Match)
Average
Tie Breaks Per Match
0.5
N/A
0.48
Over 0.5
0%
N/A
N/A
Over 1.5
0%
N/A
N/A
Over 2.5
0%
N/A
N/A
Under 0.5
100%
N/A
50%
Under 1.5
100%
N/A
50%
Under 2.5
100%
N/A
50%
Data Point
Daniel Altmaier (Match)
Zhizhen Zhang (Match)
Average
Tie Breaks Per Match
0.25
1
0.63
Over 0.5
25%
100%
63%
Over 1.5
0%
0%
0%
Over 2.5
0%
0%
0%
Under 0.5
75%
0%
38%
Under 1.5
100%
100%
100%
Under 2.5
100%
100%
100%
Net Points Won (Grass Courts)
2026 Calendar Year
Last 12 Months
3 Set Matches
5 Set Matches
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Net Points Won Per Match
N/A
N/A
N/A
Over 4.5 (5+)
N/A
N/A
N/A
Over 5.5 (6+)
N/A
N/A
N/A
Over 6.5 (7+)
N/A
N/A
N/A
Over 7.5 (8+)
N/A
N/A
N/A
Over 8.5 (9+)
N/A
N/A
N/A
Over 9.5 (10+)
N/A
N/A
N/A
Over 10.5 (11+)
N/A
N/A
N/A
Over 11.5 (12+)
N/A
N/A
N/A
Over 14.5 (12+)
N/A
N/A
N/A
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Net Point Won Per Match
N/A
N/A
N/A
Over 4.5 (5+)
N/A
N/A
N/A
Over 5.5 (6+)
N/A
N/A
N/A
Over 6.5 (7+)
N/A
N/A
N/A
Over 7.5 (8+)
N/A
N/A
N/A
Over 8.5 (9+)
N/A
N/A
N/A
Over 9.5 (10+)
N/A
N/A
N/A
Over 10.5 (11+)
N/A
N/A
N/A
Over 11.5 (12+)
N/A
N/A
N/A
Over 14.5 (15+)
N/A
N/A
N/A
Over 19.5 (20+)
N/A
N/A
N/A
Over 22.5 (23+)
N/A
N/A
N/A
3 Set Matches
5 Set Matches
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Net Points Won Per Match
15
N/A
N/A
Over 4.5 (5+)
100%
N/A
N/A
Over 5.5 (6+)
100%
N/A
N/A
Over 6.5 (7+)
100%
N/A
N/A
Over 7.5 (8+)
33%
N/A
N/A
Over 8.5 (9+)
33%
N/A
N/A
Over 9.5 (10+)
33%
N/A
N/A
Over 10.5 (11+)
33%
N/A
N/A
Over 11.5 (12+)
33%
N/A
N/A
Over 14.5 (15+)
33%
N/A
N/A
Data Point
Daniel Altmaier
Zhizhen Zhang
Match Total
Net Points won Per Match
N/A
N/A
N/A
Over 4.5 (5+)
N/A
N/A
N/A
Over 5.5 (6+)
N/A
N/A
N/A
Over 6.5 (7+)
N/A
N/A
N/A
Over 7.5 (8+)
N/A
N/A
N/A
Over 8.5 (9+)
N/A
N/A
N/A
Over 9.5 (10+)
N/A
N/A
N/A
Over 10.5 (11+)
N/A
N/A
N/A
Over 11.5 (12+)
N/A
N/A
N/A
Over 14.5 (15+)
N/A
N/A
N/A
Over 19.5 (20+)
N/A
N/A
N/A
Over 22.5 (23+)
N/A
N/A
N/A
Latest Results For Daniel Altmaier
Date
Tournament
Player
Opponent
Total Sets
Daniel Altmaier
11 - 12
Opponent
Total Wins
Daniel Altmaier
5 - 5
Opponent
Win Percentage
Daniel Altmaier
50% - 50%
Opponent
Latest Results For Zhizhen Zhang
Date
Tournament
Player
Opponent
Total Sets
Zhizhen Zhang
9 - 16
Opponent
Total Wins
Zhizhen Zhang
3 - 7
Opponent
Win Percentage
Zhizhen Zhang
30% - 70%
Opponent
Ranking
Elo
Ranking
Elo
Ranking
Elo