← Back to search

Stefan Kozlov

01/02/1998 · right-handed

Global Elo

1662

Record

39-76

ATP / Tour Record

Wins
39
Losses
76
Matches
115

Challenger Record

Wins
218
Losses
158
Matches
376

Elo and Record by Surface

Clay 1595
Wins
3
Losses
6
Matches
9

Challenger

Wins
49
Losses
38
Matches
87
Hard 1636
Wins
25
Losses
55
Matches
80

Challenger

Wins
164
Losses
112
Matches
276
Grass 1493
Wins
11
Losses
15
Matches
26

Challenger

Wins
5
Losses
8
Matches
13

Recent Matches

L Hard Washington · qualification - 1. round · 2026-07-25

vs Zachary Svajda #73

7-5 6-1

Stefan Kozlov Zachary Svajda
3 Aces 5
2 Double Faults 3
64 Service Points 61
31 First Serve In 32
19 First Serve Won 24
10 Second Serve Won 16
5 Break Points Saved 4
10 Break Points Faced 6
- Winners -
- Unforced Errors -
4.8 Average Odds 1.2
L Hard Bloomfield Hills challenger · 1. round · 2026-07-21

vs Alan Magadan #650

3-6 6-1 7-6

Stefan Kozlov Alan Magadan
8 Aces 3
7 Double Faults 3
94 Service Points 101
56 First Serve In 63
35 First Serve Won 35
19 Second Serve Won 16
6 Break Points Saved 8
10 Break Points Faced 13
- Winners -
- Unforced Errors -
1.4 Average Odds 2.6
L Hard Bloomfield Hills challenger · qualification - round of 16 · 2026-07-20

vs Roger Pascual Ferra #808

6-4 6-4

Stefan Kozlov Roger Pascual Ferra
1 Aces 0
2 Double Faults 4
68 Service Points 63
53 First Serve In 45
37 First Serve Won 27
7 Second Serve Won 9
5 Break Points Saved 4
6 Break Points Faced 7
- Winners -
- Unforced Errors -
1.4 Average Odds 2.7
W Hard Bloomfield Hills challenger · qualification - 1. round · 2026-07-19

vs Leo Vithoontien #690

4-6 6-1 6-2

Stefan Kozlov Leo Vithoontien
1 Aces 2
1 Double Faults 1
79 Service Points 88
68 First Serve In 73
49 First Serve Won 42
5 Second Serve Won 6
3 Break Points Saved 7
4 Break Points Faced 11
- Winners -
- Unforced Errors -
1.1 Average Odds 6.6
L Hard Pozoblanco challenger · 1. round · 2026-07-14

vs Yi Zhou #236

6-3 3-6 6-4

Stefan Kozlov Yi Zhou
3 Aces 3
5 Double Faults 4
84 Service Points 112
54 First Serve In 64
33 First Serve Won 40
16 Second Serve Won 24
5 Break Points Saved 6
10 Break Points Faced 10
- Winners -
- Unforced Errors -
2.4 Average Odds 1.5
L Grass Newport challenger · R16 · 2026-07-10

vs Jacob Fearnley #159

3-6 6-3 6-2

Stefan Kozlov Jacob Fearnley
2 Aces 2
2 Double Faults 6
83 Service Points 77
46 First Serve In 49
27 First Serve Won 33
15 Second Serve Won 10
5 Break Points Saved 3
12 Break Points Faced 8
- Winners -
- Unforced Errors -
4.1 Average Odds 1.2
W Grass Newport challenger · 1. round · 2026-07-09

vs Yibing Wu #102

6-4 2-6 6-4

Stefan Kozlov Yibing Wu
3 Aces 4
5 Double Faults 7
91 Service Points 110
48 First Serve In 59
28 First Serve Won 43
21 Second Serve Won 19
6 Break Points Saved 12
11 Break Points Faced 17
- Winners -
- Unforced Errors -
4.1 Average Odds 1.2
W Grass Newport challenger · qualification - round of 16 · 2026-07-07

vs Garrett Johns #382

6-4 6-2

Stefan Kozlov Garrett Johns
4 Aces 2
3 Double Faults 3
45 Service Points 59
28 First Serve In 32
21 First Serve Won 19
10 Second Serve Won 10
2 Break Points Saved 5
4 Break Points Faced 10
- Winners -
- Unforced Errors -
1.4 Average Odds 2.8
W Grass Newport challenger · qualification - 1. round · 2026-07-05

vs Aidan Mayo #561

7-6 5-7 6-3

Stefan Kozlov Aidan Mayo
2 Aces 4
5 Double Faults 5
99 Service Points 117
52 First Serve In 64
42 First Serve Won 49
25 Second Serve Won 24
5 Break Points Saved 3
8 Break Points Faced 7
- Winners -
- Unforced Errors -
1.8 Average Odds 1.9
L Clay Valencia CH · Q2 · 2026-05-12

vs Alejo Sanchez Quilez #485

7-5 6-4

Stefan Kozlov Alejo Sanchez Quilez
0 Aces 1
5 Double Faults 0
69 Service Points 69
35 First Serve In 46
25 First Serve Won 33
12 Second Serve Won 10
1 Break Points Saved 1
5 Break Points Faced 3
- Winners -
- Unforced Errors -
- Average Odds -