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 | 
|---|---|---|---|---|---|
| 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 | - | - | - | 
| Savannah challenger | Round | Result | H | A | ||
|---|---|---|---|---|---|---|
| 25.04. | Spizzirri E. - Kozlov S. | QF | 6-3, 7-5 | 1.54 | 2.38 | |
| 24.04. | Kozlov S. - Blancaneaux G. | R16 | 6-1, 3-1 | 1.83 | 1.90 | |
| 22.04. | Kozlov S. - Wiskandt M. | 1R | 6-2, 6-1 | 1.33 | 3.16 | |
| 21.04. | Kozlov S. - Sigsgaard C. | Q-R16 | 6-4, 6-4 | 1.69 | 2.07 | |
| 20.04. | Kozlov S. - Fishback R. | Q-1R | 7-5, 6-3 | 1.07 | 7.49 | |
| Savannah challenger | Round | Result | H | A | ||
|---|---|---|---|---|---|---|
| 23.04. | Hach / Mejia - Kozlo / Kozlo | R16 | 6-3, 3-6, 11-9 | 1.23 | 3.34 | |
| No matches. | 
| Sarasota challenger | Round | Result | H | A | ||
|---|---|---|---|---|---|---|
| 12.04. | Quinn / Sandg - Kozlo / Kozlo | QF | 2-6, 7-5, 11-9 | 1.38 | 2.88 | |
| 10.04. | Kozlo / Kozlo - Dunca / Gomez | R16 | 6-4, 6-4 | 2.95 | 1.36 | |
| Merida challenger | Round | Result | H | A | ||
| 24.03. | Fancu / Reese - Kozlo / Kozlo | F | 7-5, 6-3 | 1.23 | 3.80 | |
| 23.03. | Kozlo / Kozlo - Campa / Pache | SF | 6-0, 6-4 | 2.26 | 1.47 | |
| 22.03. | Kozlo / Kozlo - Vance / Whiti | QF | 64-7, 6-4, 10-4 | 1.42 | 2.70 | |
| 21.03. | Kozlo / Kozlo - Brumm / Ribei | R16 | 6-3, 6-2 | 1.57 | 2.25 | |
| Kigali 2 challenger | Round | Result | H | A | ||
| 06.03. | Schac / Sheeh - Ayeni / Kozlo | R16 | 1.99 | 1.75 | ||
| No matches. | 
| French Open | Round | Result | H | A | ||
|---|---|---|---|---|---|---|
| 17.05. | Serdarusic N. - Kozlov S. | Q-1R | 7-5, 6-0 | 1.31 | 3.34 | |
| Bordeaux challenger | Round | Result | H | A | ||
| 10.05. | Munar J. - Kozlov S. | 1R | 6-2, 6-3 | 1.06 | 9.09 | |
| Savannah challenger | Round | Result | H | A | ||
| 26.04. | Pereira J. - Kozlov S. | 1R | 6-1, 6-0 | 2.99 | 1.36 | |
| Mexico City challenger | Round | Result | H | A | ||
| 05.04. | Melzer G. - Kozlov S. | 1R | 6-4, 0-0 | 2.05 | 1.73 | |
| Pereira challenger | Round | Result | H | A | ||
| 29.03. | Mejia N. - Kozlov S. | 1R | 6-1, 6-1 | 2.88 | 1.39 | |
| No matches. | 
| No matches. | 
| Kyiv challenger | Round | Result | H | A | ||
|---|---|---|---|---|---|---|
| 06.09. | Agamenone F. - Kozlov S. | 1R | 6-4, 7-5 | 1.42 | 2.77 | |
| Futures 2021 | Round | Result | H | A | ||
| 04.07. | Kozlov S. - Harrison R. | SF | 5-7, 6-3, 6-3 | 1.99 | 1.74 | |
| 03.07. | Kozlov S. - Langmo C. | QF | 6-2, 7-5 | 1.29 | 3.33 | |
| 02.07. | Kozlov S. - Shelton B. | R16 | 7-5, 6-1 | |||
| 01.07. | Kozlov S. - Zhu E. | 1R | 6-3, 3-6, 6-1 | 1.39 | 2.77 | |
| 18.02. | Krueger M. - Kozlov S. | R16 | 6-4, 3-0 | 1.62 | 2.13 | |
| 17.02. | Kozlov S. - Villanueva G. | 1R | 6-3, 6-2 | 1.52 | 2.38 | |
| Kyiv challenger | Round | Result | H | A | ||
|---|---|---|---|---|---|---|
| 09.09. | Agame / Pucin - Kozlo / Stald | R16 | 0-6, 7-65, 10-7 | 1.43 | 2.66 | |
| No matches. | 
| Futures 2019 | Round | Result | H | A | ||
|---|---|---|---|---|---|---|
| 01.11. | Rodriguez C. - Kozlov S. | QF | 6-2, 6-2 | 3.13 | 1.31 | |
| 31.10. | Kozlov S. - Riffice S. | R16 | 6-2, 6-4 | 1.66 | 2.08 | |
| 29.10. | Kozlov S. - Mbithi M. | 1R | 6-4, 6-3 | 1.05 | 7.83 | |
| Savannah challenger | Round | Result | H | A | ||
| 29.04. | Vukic A. - Kozlov S. | 1R | 6-2, 7-611 | 2.30 | 1.56 | |
| Tallahassee chall. | Round | Result | H | A | ||
| 25.04. | Sandgren T. - Kozlov S. | 2R | 6-3, 6-2 | 1.37 | 2.94 | |
| 22.04. | Kozlov S. - Zhurbin A. | 1R | 4-6, 6-4, 6-0 | 1.17 | 4.86 | |
| Futures 2019 | Round | Result | H | A | ||
| 11.04. | Popko D. - Kozlov S. | R16 | 7-5, 6-3 | 1.69 | 2.03 | |
| 10.04. | Kozlov S. - Alves M. | 1R | 6-3, 6-1 | 1.13 | 4.93 | |
| No matches. | 
| No matches. | 
| Vicenza challenger | Round | Result | H | A | ||
|---|---|---|---|---|---|---|
| 27.05. | Cuevas M. - Kozlov S. | Q-R16 | 6-4, 6-1 | 2.72 | 1.39 | |
| 26.05. | Kozlov S. - Sardella E. | Q-1R | 6-1, 6-2 | 1.03 | 9.53 | |
| French Open | Round | Result | H | A | ||
| 22.05. | Uchiyama Y. - Kozlov S. | Q-1R | 6-4, 7-5 | 3.45 | 1.29 | |
| Bordeaux challenger | Round | Result | H | A | ||
| 18.05. | Opelka R. - Kozlov S. | QF | 7-64, 6-1 | 1.60 | 2.23 | |
| 16.05. | Kozlov S. - Hoang A. | R16 | 6-3, 7-64 | 1.74 | 2.02 | |
| 15.05. | Kozlov S. - Herbert P. | 1R | 6-2, 7-65 | 2.97 | 1.34 | |
| Aix en Provence challenger | Round | Result | H | A | ||
| 08.05. | Lestienne C. - Kozlov S. | 1R | 7-62, 6-4 | 1.75 | 1.99 | |
| Sarasota challenger | Round | Result | H | A | ||
| 20.04. | Dellien H. - Kozlov S. | QF | 5-7, 6-1, 7-66 | 1.92 | 1.82 | |
| 18.04. | Kozlov S. - Young D. | R16 | 6-4, 6-4 | 1.76 | 1.98 | |
| 16.04. | Kozlov S. - Krueger M. | 1R | 6-4, 6-3 | 1.76 | 1.99 | |
| Houston | Round | Result | H | A | ||
| 10.04. | Pella G. - Kozlov S. | 1R | 6-3, 6-2 | 1.26 | 3.89 | |
| 08.04. | Kozlov S. - Santillan A. | Q-QF | 6-2, 6-0 | 1.97 | 1.80 | |
| 07.04. | Kozlov S. - Bellucci T. | Q-R16 | 63-7, 6-3, 7-65 | 3.88 | 1.25 | |
| Vicenza challenger | Round | Result | H | A | ||
|---|---|---|---|---|---|---|
| 30.05. | Galdo / Olivo - Kozlo / Krueg | R16 | 6-2, 6-4 | 1.50 | 1.94 | |
| Bordeaux challenger | Round | Result | H | A | ||
| 16.05. | Klahn / Polan - Albot / Kozlo | QF | 6-2, 6-4 | 1.57 | 2.10 | |
| 14.05. | Albot / Kozlo - Koolh / Sitak | R16 | 7-5, 6-1 | 3.45 | 1.22 | |
| No matches. | 
| Heilbronn challenger | Round | Result | H | A | ||
|---|---|---|---|---|---|---|
| 16.05. | Marca / Weiss - Fucso / Kozlo | R16 | 6-4, 6-4 | 1.32 | 2.42 | |
| Tallahassee chall. | Round | Result | H | A | ||
| 28.04. | Escob / Quiro - Kozlo / Novik | QF | 6-1, 6-4 | 1.73 | 1.45 | |
| 27.04. | Kozlo / Novik - Polan / Skups | R16 | 6-3, 1-6, 10-7 | 1.81 | 1.59 | |
| Sarasota challenger | Round | Result | H | A | ||
| 23.04. | Lipsk / Melze - Kozlo / Polan | F | 6-2, 6-4 | 1.45 | 2.27 | |
| 22.04. | Kozlo / Polan - Gonza / Venus | SF | 6-3, 1-6, 10-3 | 2.52 | 1.40 | |
| 19.04. | Kozlo / Polan - Paes / Sa A. | QF | 6-3, 3-6, 10-7 | 3.13 | 1.30 | |
| 17.04. | Kozlo / Polan - Bango / McDon | R16 | 1-6, 6-2, 11-9 | 1.74 | 1.76 | |
| Futures 2017 | Round | Result | H | A | ||
| 24.01. | Argue / Londe - Kozlo / Kozlo | R16 | 6-4, 6-4 | 1.72 | 1.91 | |
| No matches. | 
| Futures 2016 | Round | Result | H | A | ||
|---|---|---|---|---|---|---|
| 16.02. | Quiro / Uchid - Kozlo / Kozlo | R16 | 6-3, 7-62 | 1.16 | 4.41 | |
| No matches. | 
| Futures 2015 | Round | Result | H | A | ||
|---|---|---|---|---|---|---|
| 03.10. | Safranek V. - Kozlov S. | SF | 5-7, 6-3, 6-0 | 2.20 | 1.55 | |
| 02.10. | Kozlov S. - Delic M. | QF | 6-4, 1-6, 7-65 | 2.28 | 1.50 | |
| 01.10. | Kozlov S. - Schutt L. | R16 | 63-7, 6-2, 7-5 | 1.07 | 5.93 | |
| 29.09. | Kozlov S. - Szintai D. | 1R | 6-2, 6-2 | 1.01 | 9.08 | |
| 10.05. | King D. - Kozlov S. | F | 6-2, 3-6, 6-0 | 1.60 | 2.15 | |
| 09.05. | Kozlov S. - Bangoura S. | SF | 6-2, 2-6, 6-4 | 1.51 | 2.31 | |
| 08.05. | Kozlov S. - Spencer W. | QF | 62-7, 6-2, 6-4 | 1.66 | 2.07 | |
| 07.05. | Kozlov S. - Haviland R. | R16 | 6-4, 6-4 | 1.23 | 3.57 | |
| 06.05. | Kozlov S. - Ouellette G. | 1R | 6-3, 66-7, 7-5 | 1.44 | 2.51 | |
| 05.05. | Kozlov S. - Scocuglia P. | Q-R16 | 69-7, 6-2, 6-3 | |||
| 04.05. | Kozlov S. - Tikhomirov M. | Q-3R | 6-4, 6-4 | |||
| 03.05. | Kozlov S. - Acierno F. | Q-2R | 6-2, 6-2 | |||
| Tallahassee chall. | Round | Result | H | A | ||
| 27.04. | Arguello F. - Kozlov S. | 1R | 6-4, 7-5 | 1.21 | 3.96 | |
| Savannah challenger | Round | Result | H | A | ||
| 22.04. | Smyczek T. - Kozlov S. | 1R | 6-4, 6-1 | 1.33 | 3.13 | |
| Sarasota challenger | Round | Result | H | A | ||
| 11.04. | Matsukevitch D. - Kozlov S. | Q-1R | 6-2, 6-2 | |||
| Futures 2015 | Round | Result | H | A | ||
|---|---|---|---|---|---|---|
| 03.10. | Kolar / Toman - Kozlo / Serda | F | 6-4, 2-6, 10-6 | 2.71 | 1.39 | |
| 02.10. | Kozlo / Serda - Lojda / Safra | SF | 6-1, 6-2 | 1.56 | 2.23 | |
| 01.10. | Kozlo / Serda - Peter / Zgomb | QF | 6-4, 6-4 | |||
| 29.09. | Kozlo / Serda - Krivi / Panzi | R16 | 2-6, 6-0, 10-4 | |||
| Tallahassee chall. | Round | Result | H | A | ||
| 27.04. | Argue / Colla - Kozlo / Willi | R16 | 4-6, 6-3, 10-2 | 1.57 | 2.24 | |
| Savannah challenger | Round | Result | H | A | ||
| 22.04. | Duran / Zebal - Jenki / Kozlo | R16 | 6-3, 6-2 | 1.24 | 3.66 | |
| Sarasota challenger | Round | Result | H | A | ||
| 13.04. | Argue / Bagni - Kozlo / Mmoh | R16 | 6-3, 6-3 | 1.35 | 2.93 | |
| No matches. | 
| Futures 2014 | Round | Result | H | A | ||
|---|---|---|---|---|---|---|
| 22.05. | Lizariturry J. - Kozlov S. | R16 | 6-2, 5-7, 6-4 | |||
| 20.05. | Kozlov S. - Martos Gornes S. | 1R | 6-2, 6-3 | 1.16 | 4.50 | |
| 01.05. | Mena F. - Kozlov S. | R16 | 3-6, 6-3, 6-2 | 2.25 | 1.57 | |
| 29.04. | Kozlov S. - Mccarthy D. | 1R | 6-1, 2-0 | 1.33 | 3.25 | |
| Savannah challenger | Round | Result | H | A | ||
| 20.04. | Quigley E. - Kozlov S. | Q-1R | 4-6, 7-5, 6-3 | 2.50 | 1.50 | |
| Futures 2014 | Round | Result | H | A | ||
|---|---|---|---|---|---|---|
| 23.05. | Marto / Toled - Kozlo / Rubin | F | 6-2, 7-5 | 3.00 | 1.36 | |
| 22.05. | Kozlo / Rubin - Morit / Saito | SF | 3-6, 6-4, 10-7 | 1.66 | 2.10 | |
| 21.05. | Kozlo / Rubin - Arauz / Roca | QF | 6-3, 7-5 | |||
| 19.05. | Kozlo / Rubin - Altam / Tiafo | R16 | 7-5, 6-4 | 1.72 | 2.00 | |
| Savannah challenger | Round | Result | H | A | ||
| 21.04. | Marx / Merti - Altam / Kozlo | R16 | 6-3, 6-3 | 1.21 | 3.98 | |
| No matches. | 
| Futures 2013 | Round | Result | H | A | ||
|---|---|---|---|---|---|---|
| 15.11. | Ouellette G. - Kozlov S. | QF | 6-4, 7-64 | |||
| 14.11. | Kozlov S. - Podzus J. | R16 | 6-4, 6-4 | 1.36 | 3.00 | |
| 13.11. | Kozlov S. - Dmitriev O. | 1R | 6-4, 7-5 | 1.40 | 2.75 | |
| 08.11. | Escobar G. - Kozlov S. | QF | 7-68, 6-4 | 1.50 | 2.50 | |
| 07.11. | Kozlov S. - Kalyuzhnyy V. | R16 | 7-5, 6-3 | |||
| 06.11. | Kozlov S. - Roelofse R. | 1R | 6-3, 6-4 | 1.83 | 1.83 | |
| 05.11. | Kozlov S. - Daciek P. | Q-R16 | 5-7, 6-1, 6-4 | |||
| 04.11. | Kozlov S. - Devine J. | Q-3R | 6-4, 7-5 | |||
| 03.11. | Kozlov S. - Korinek A. | Q-2R | 6-2, 6-4 | |||
| 30.10. | Podzus M. - Kozlov S. | 1R | 6-4, 6-2 | |||
| 30.01. | King K. - Kozlov S. | 1R | 6-3, 6-4 | 1.31 | 3.18 | |
| 28.01. | Kozlov S. - Burkhardt J. | Q-R16 | 5-7, 6-3, 7-5 | |||
| 27.01. | Kozlov S. - Mierloi M. | Q-3R | 6-2, 6-3 | |||
| 26.01. | Kozlov S. - Elliott E. | Q-2R | 6-4, 6-3 | |||
| 21.01. | Dutra da Silva D. - Kozlov S. | 1R | 6-0, 6-3 | |||
| Futures 2013 | Round | Result | H | A | ||
|---|---|---|---|---|---|---|
| 15.11. | Bango / Kozlo - Mccar / Mylni | F | 6-2, 6-4 | |||
| 14.11. | Bango / Kozlo - Busha / Matsu | SF | 6-2, 6-1 | |||
| 13.11. | Bango / Kozlo - Luisi / Recar | QF | ||||
| 12.11. | Bango / Kozlo - Podzu / Podzu | R16 | 6-4, 6-3 | |||
| 30.10. | Cadog / Dacie - Kozlo / Zvere | QF | 66-7, 6-3, 10-8 | |||
| 29.10. | Kozlo / Zvere - Crowl / Roelo | R16 | 7-63, 6-2 | |||
| 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 | 21 | |||
| Lima 3 challenger | 22 | |||
| Matsuyama challenger | 19 | |||
| Knoxville challenger | 20 | |||
| UTR Pro Tennis Series 3 | 284 | |||
| UTR Pro Tennis Series 5 | 68 | |||
| UTR Pro Tennis Series 9 | 73 | |||
| Austin 2 | 11 | |||
| Tucuman | 12 | |||
| Faro ITF | 20 | |||
| Hamamatsu ITF | 25 | |||
| Liberec ITF | 20 | |||
| Orlando 3 ITF | 26 | |||
| UTR Pro Tennis Series 5 | 43 | |||
| UTR Pro Tennis Series 9 | 13 | |||
| Antalya 32 ITF | 24 | |||
| Castellon 2 ITF | 25 | |||
| Heraklion 9 ITF | 21 | |||
| Lincoln ITF | 8 | |||
| 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 | 165 | |||
- Player's profile
 
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- Head-to-head
 
- Interesting matches
 



