Head 2 Head
Win Loss Stats
Kozlov
LLLWLLLWLL
Mayo
LWLWWWWWLW
2026
2025
2024
22 - 23
24 - 20
7-13
Hard
20-16
7-4
I Hard
0-0
5-5
Clay
4-3
3-1
Grass
0-1
- S.Kozlov (ALT)
- Aidan Mayo (q)
- 6-3 5-7 6-2
- 1st
-
12 Aug 26
-
Brownsburg Challenger -
-
Hard
-
- S.Kozlov (q)
- Aidan Mayo
- 7-63 5-7 6-3
- q1
-
-
05 Jul 26
-
Newport Challenger -
-
Grass
-
-
- S.Kozlov (5)
- Aidan Mayo (3)
- 6-4 6-4
- 1/4
-
-
16 May 25
-
M25 Xalapa -
-
Hard
-
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Stefan Kozlov
| Year | Sum. | Hard | Clay | I.hard | Grass | C. |
|---|---|---|---|---|---|---|
| 2026 | 22-23 | 7-13 | 5-5 | 7-4 | 3-1 | 0-0 |
| 2025 | 28-12 | 12-6 | 6-2 | 10-3 | 0-1 | 0-0 |
| 2024 | 37-19 | 16-9 | 17-8 | 4-2 | 0-0 | 0-0 |
| 2023 | 6-12 | 1-6 | 0-0 | 5-6 | 0-0 | 0-0 |
| 2022 | 21-34 | 14-18 | 0-5 | 4-5 | 3-6 | 0-0 |
| 2021 | 41-15 | 20-12 | 5-2 | 16-1 | 0-0 | 0-0 |
| 2020 | 13-13 | 7-8 | 0-0 | 6-5 | 0-0 | 0-0 |
| 2019 | 22-18 | 14-9 | 4-4 | 4-5 | 0-0 | 0-0 |
| 2018 | 13-26 | 4-12 | 7-6 | 1-4 | 1-4 | 0-0 |
| 2017 | 31-29 | 15-14 | 8-8 | 3-2 | 5-5 | 0-0 |
| 2016 | 58-31 | 28-15 | 10-6 | 16-5 | 4-5 | 0-0 |
| 2015 | 44-27 | 15-12 | 10-5 | 17-8 | 2-2 | 0-0 |
| 2014 | 17-15 | 15-10 | 2-3 | 0-2 | 0-0 | 0-0 |
| 2013 | 13-8 | 3-2 | 10-5 | 0-0 | 0-1 | 0-0 |
| 2012 | 2-1 | 2-1 | 0-0 | 0-0 | 0-0 | 0-0 |
| Total | 368-283 | 173-147 | 84-59 | 93-52 | 18-25 | 0-0 |
San Diego 2 Challenger
-
Colton SmithC.SmithUSA Loss
- 6-4 6-2
- 1st
-
22 Sep 26
Tiburon Challenger
-
Darwin BlanchD.BlanchUSA Loss
- 6-3 2-6 7-610
- 1st
-
15 Sep 26
Brownsburg Challenger
-
Harry WendelkenH.WendelkenGBR Loss
- 2-6 6-4 6-1
- 2nd
-
13 Aug 26
-
Aidan MayoA.MayoUSA
- 6-3 5-7 6-2
- 1st
-
12 Aug 26
Washington
-
Zachary SvajdaZ.SvajdaUSA Loss
- 7-5 6-1
- q1
-
25 Jul 26
Bloomfield Hills Challenger
-
Alan MagadanA.MagadanMEX Loss
- 3-6 6-1 7-64
- 1st
-
21 Jul 26
-
Roger Pascual FerraR.FerraESP Loss
- 6-4 6-4
- Q.
-
20 Jul 26
-
Leo VithoontienL.VithoontienJPN
- 4-6 6-1 6-2
- q1
-
19 Jul 26
Pozoblanco Challenger
-
Yi ZhouY.ZhouCHN Loss
- 6-3 3-6 6-4
- 1st
-
14 Jul 26
Newport Challenger
-
Jacob FearnleyJ.FearnleyGBR Loss
- 3-6 6-3 6-2
- 2nd
-
10 Jul 26
Aidan Mayo
| Year | Sum. | Hard | Clay | I.hard | Grass | C. |
|---|---|---|---|---|---|---|
| 2026 | 24-20 | 20-16 | 4-3 | 0-0 | 0-1 | 0-0 |
| 2025 | 17-22 | 16-12 | 0-4 | 0-5 | 1-1 | 0-0 |
| 2024 | 28-32 | 16-18 | 4-4 | 7-9 | 1-1 | 0-0 |
| 2023 | 46-28 | 24-15 | 2-5 | 20-8 | 0-0 | 0-0 |
| 2022 | 34-25 | 27-19 | 4-4 | 3-2 | 0-0 | 0-0 |
| 2021 | 9-8 | 9-6 | 0-1 | 0-1 | 0-0 | 0-0 |
| 2020 | 1-1 | 0-0 | 1-1 | 0-0 | 0-0 | 0-0 |
| 2019 | 3-3 | 1-1 | 2-2 | 0-0 | 0-0 | 0-0 |
| Total | 162-139 | 113-87 | 17-24 | 30-25 | 2-3 | 0-0 |
San Diego 2 Challenger
-
Sebastian GorznyS.GorznyUSA Loss
- 6-3 6-4
- Q.
-
21 Sep 26
-
Jordan LeeJ.LeeUSA
- 6-2 6-2
- q1
-
20 Sep 26
Tiburon Challenger
-
Ryan SeggermanR.SeggermanUSA Loss
- 1-6 6-4 6-4
- 1st
-
15 Sep 26
Kingston 2 Challenger
-
Andres AndradeA.AndradeECU
- 6-3 7-67
- Fin.
-
29 Aug 26
-
Luis Queiroz MiguelL.MiguelBRA
- 6-3 6-4
- 1/2
-
28 Aug 26
-
Andres MartinA.MartinUSA
- 6-4 6-4
- 1/4
-
27 Aug 26
-
Benjamin WillwerthB.WillwerthUSA
- 6-4 2-6 6-4
- 2nd
-
26 Aug 26
-
Matthew ForbesM.ForbesUSA
- 7-5 7-5
- 1st
-
25 Aug 26
-
Keshav ChopraK.ChopraUSA Loss
- 4-6 7-5 6-3
- Q.
-
24 Aug 26
-
Joao Vitor Goncalves CeolinJ.CeolinBRA
- 6-3 6-2
- q1
-
23 Aug 26
H2H Ranking live progression
