Kozlov Stefan - profile
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			Kozlov StefanCountry: USA Height / Weight: 183 cm / 79 kg Age: 27 (1. 2. 1998) Current/Highest rank - singles: 471. / 103. Current/Highest rank - doubles: - / 180. Sex: man Plays: right  | 
		
- Next match
 
| Tournament | Round | Start | Match | H | A | 
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| Knoxville challenger | Next opponent is not known yet | ||||
| Year | Round | ||||||||||||||||||||||||||||||
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| 2023 | qualification | ||||||||||||||||||||||||||||||
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| 2022 | quarterfinal | ||||||||||||||||||||||||||||||
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| 2021 | round of 16 | ||||||||||||||||||||||||||||||
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| 2018 | qualification | ||||||||||||||||||||||||||||||
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| 2017 | 1. round | ||||||||||||||||||||||||||||||
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| 2016 | semifinal | ||||||||||||||||||||||||||||||
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| 2015 | round of 16 | ||||||||||||||||||||||||||||||
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Player's record
| Year | Summary | Clay | Hard | Indoors | Grass | Not set | 
|---|---|---|---|---|---|---|
| Summary: | 348/259 | 77/53 | 169/135 | 81/47 | 15/24 | 6/0 | 
| 2025 | 26/10 | 4/1 | 12/6 | 5/2 | 0/1 | 5/0 | 
| 2024 | 38/19 | 17/8 | 16/9 | 4/2 | - | 1/0 | 
| 2023 | 6/12 | - | 1/6 | 5/6 | - | - | 
| 2022 | 21/34 | 0/5 | 14/18 | 4/5 | 3/6 | - | 
| 2021 | 44/16 | 5/2 | 23/13 | 16/1 | - | - | 
| 2020 | 13/13 | - | 7/8 | 6/5 | - | - | 
| 2019 | 22/18 | 4/4 | 14/9 | 4/5 | - | - | 
| 2018 | 13/26 | 7/6 | 4/12 | 1/4 | 1/4 | - | 
| 2017 | 31/29 | 8/8 | 15/14 | 3/2 | 5/5 | - | 
| 2016 | 58/31 | 10/6 | 28/15 | 16/5 | 4/5 | - | 
| 2015 | 44/27 | 10/5 | 15/12 | 17/8 | 2/2 | - | 
| 2014 | 17/15 | 2/3 | 15/10 | 0/2 | - | - | 
| 2013 | 13/8 | 10/5 | 3/2 | - | 0/1 | - | 
| 2012 | 2/1 | - | 2/1 | - | - | - | 
| Year | Summary | Clay | Hard | Indoors | Grass | Not set | 
|---|---|---|---|---|---|---|
| Summary: | 76/66 | 19/18 | 43/32 | 14/15 | 0/1 | - | 
| 2025 | 0/3 | 0/1 | 0/1 | 0/1 | - | - | 
| 2024 | 4/2 | 4/2 | - | - | - | - | 
| 2022 | 3/1 | - | 3/0 | - | 0/1 | - | 
| 2021 | 11/3 | 0/1 | 7/2 | 4/0 | - | - | 
| 2020 | 0/4 | - | 0/3 | 0/1 | - | - | 
| 2019 | 3/3 | - | 3/2 | 0/1 | - | - | 
| 2018 | 2/5 | 1/2 | 0/2 | 1/1 | - | - | 
| 2017 | 7/9 | 4/4 | 3/5 | - | - | - | 
| 2016 | 23/12 | 0/1 | 16/7 | 7/4 | - | - | 
| 2015 | 9/13 | 3/4 | 4/3 | 2/6 | - | - | 
| 2014 | 7/7 | 3/2 | 4/4 | 0/1 | - | - | 
| 2013 | 5/3 | 4/1 | 1/2 | - | - | - | 
| 2012 | 2/1 | - | 2/1 | - | - | - | 
| Futures 2016 | Round | Result | H | A | ||
|---|---|---|---|---|---|---|
| 16.02. | Quiro / Uchid - Kozlo / Kozlo | R16 | 6-3, 7-62 | 1.16 | 4.41 | |
| No matches. | 
- Injuries
 
| Start | Tournament | Reason | 
|---|---|---|
| 25.10.2024 - 12.11.2024 | Sioux Falls challenger | walkover | 
| 06.07.2024 - 14.07.2024 | Bloomfield Hills challenger | retired | 
| 05.06.2024 - 30.06.2024 | Tyler challenger | retired | 
| 11.02.2023 - 07.03.2023 | Delray Beach | retired | 
| 18.01.2023 - 31.01.2023 | Tenerife challenger | retired | 
| 15.09.2022 - 20.09.2022 | Cary 2 challenger | retired | 
| 05.04.2022 - 26.04.2022 | Mexico City challenger | retired | 
| 14.09.2021 - 15.09.2021 | Cary 2 challenger | retired | 
| 18.02.2021 - 14.03.2021 | Futures 2021 | retired | 
| 22.01.2020 - 22.01.2020 | Futures 2020 | retired | 
| 23.07.2019 - 20.08.2019 | Binghamton challenger | retired - neck | 
| 19.03.2018 - 07.04.2018 | Miami | retired | 
| 31.07.2017 - 14.08.2017 | Washington | retired - viral illness | 
| 22.07.2016 - 26.07.2016 | Binghamton challenger | retired - fever | 
This week's tournaments
| Main tournaments | ||||
| Athens | 14 | |||
| Metz | 13 | |||
| Masters Cup WTA | 12 | |||
| Lower level tournaments | ||||
| Helsinki challenger | 21 | |||
| Taipei challenger | 16 | |||
| Lima 3 challenger | 22 | |||
| Matsuyama challenger | 13 | |||
| Knoxville challenger | 20 | |||
| UTR Pro Tennis Series 3 | 278 | |||
| UTR Pro Tennis Series 5 | 66 | |||
| UTR Pro Tennis Series 9 | 70 | |||
| Austin 2 | 11 | |||
| Tucuman | 12 | |||
| Faro ITF | 20 | |||
| Hamamatsu ITF | 18 | |||
| Liberec ITF | 20 | |||
| Orlando 3 ITF | 26 | |||
| UTR Pro Tennis Series 5 | 40 | |||
| UTR Pro Tennis Series 9 | 13 | |||
| Antalya 32 ITF | 24 | |||
| Castellon 2 ITF | 25 | |||
| Heraklion 9 ITF | 21 | |||
| Lincoln ITF | 15 | |||
| Monastir 6 ITF | 24 | |||
| Neuquén 2 ITF | 24 | |||
| Sharm El Sheikh 20 ITF | 16 | |||
| Solarino 4 ITF | 20 | |||
| Szabolcsveresmart ITF | 21 | |||
| UTR Pro Match Series | 156 | |||
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