Namn: Stefan Kozlov
Land: USA
Födelsedatum: 01.02.98, 27 År
ATP ranking: 441
TOP ranking's position: 103 (18.07.22, 533 punkter)
Punkter: 102
Prispengar: 1026233 $
Matcher totalt: 615
Vinna: 351
%: 57.07 %
Land: USA
Födelsedatum: 01.02.98, 27 År
ATP ranking: 441
TOP ranking's position: 103 (18.07.22, 533 punkter)
Punkter: 102
Prispengar: 1026233 $
Matcher totalt: 615
Vinna: 351
%: 57.07 %
| år | Sammanfattning | Svårt | Lera | I. svårt | Carpet | Gräs | Akryl |
| 2025 | 10/6 | 2/3 | 4/1 | 4/2 | 0/0 | 0/0 | 0/0 |
| 2024 | 37/20 | 16/9 | 17/8 | 4/3 | 0/0 | 0/0 | 0/0 |
| 2023 | 6/12 | 1/6 | 0/0 | 5/6 | 0/0 | 0/0 | 0/0 |
| 2022 | 21/34 | 14/18 | 0/5 | 4/5 | 0/0 | 3/6 | 0/0 |
| 2021 | 41/15 | 20/12 | 5/2 | 16/1 | 0/0 | 0/0 | 0/0 |
| 2020 | 13/13 | 7/8 | 0/0 | 6/5 | 0/0 | 0/0 | 0/0 |
| 2019 | 22/18 | 14/9 | 4/4 | 4/5 | 0/0 | 0/0 | 0/0 |
| 2018 | 13/26 | 4/12 | 7/6 | 1/4 | 0/0 | 1/4 | 0/0 |
| 2017 | 31/29 | 15/14 | 8/8 | 3/2 | 0/0 | 5/5 | 0/0 |
| 2016 | 58/31 | 28/15 | 10/6 | 16/5 | 0/0 | 4/5 | 0/0 |
| 2015 | 44/27 | 15/12 | 10/5 | 17/8 | 0/0 | 2/2 | 0/0 |
| 2014 | 33/19 | 23/12 | 5/4 | 0/2 | 0/0 | 5/1 | 0/0 |
| 2013 | 17/11 | 3/3 | 11/6 | 0/0 | 0/0 | 3/2 | 0/0 |
| 2012 | 5/3 | 4/2 | 0/0 | 0/0 | 0/0 | 1/1 | 0/0 |
| TOTALT | 351/264 | 166/135 | 81/55 | 80/48 | 0/0 | 24/26 | 0/0 |
| proc. % | 57.07 % | 55.15 % | 59.56 % | 62.5 % | 0 % | 48 % | 0 % |
Stefan Kozlov / schemalagda / sista
| inga matchningar hittades |
Stefan Kozlov form / år 2015 / yta: Lera
Stefan Kozlov / år 2015 / yta: Lera
| 28.09.15 | 1/2 | Vaclav Safranek | Stefan Kozlov | 5-7, 6-3, 6-0 |  | Matcha detaljer |  Croatia F18 | Lera |
| 28.09.15 | 2: a omgången | Stefan Kozlov | Leon Schutt | 6-73, 6-2, 7-5 |  | Matcha detaljer | ||
| 28.09.15 | 1/4 | Stefan Kozlov | Mate Delic | 6-4, 1-6, 7-65 | | Matcha detaljer | ||
| 28.09.15 | 1: a omgången | Stefan Kozlov | David Szintai | 6-2, 6-2 | | Matcha detaljer | ||
| 04.05.15 | kval. 2 | Stefan Kozlov | Maksim Tikhomirov | 6-4, 6-4 | | Matcha detaljer |  USA F15 | Lera |
| 04.05.15 | 1/4 | Stefan Kozlov | Wil Spencer | 6-72, 6-2, 6-4 | | Matcha detaljer | ||
| 04.05.15 | kval. | Stefan Kozlov | Pedro Scocuglia | 6-79, 6-2, 6-3 | | Matcha detaljer | ||
| 04.05.15 | 1/2 | Stefan Kozlov | Sekou Bangoura | 6-2, 2-6, 6-4 | | Matcha detaljer | ||
| 04.05.15 | 1: a omgången | Stefan Kozlov | Gregory Ouellette | 6-3, 6-76, 7-5 | | Matcha detaljer | ||
| 04.05.15 | kval. 1 | Stefan Kozlov | Frank Acierno | 6-2, 6-2 | | Matcha detaljer | ||
| 04.05.15 | fin | Darian King | Stefan Kozlov | 6-2, 3-6, 6-0 | | Matcha detaljer | ||
| 04.05.15 | 2: a omgången | Stefan Kozlov | Ryan Haviland | 6-4, 6-4 | | Matcha detaljer | ||
| 27.04.15 | 1: a omgången | Facundo Arguello | Stefan Kozlov | 6-4, 7-5 | | Matcha detaljer | Tallahassee Challenger | Lera |
| 21.04.15 | 1: a omgången | Tim Smyczek | Stefan Kozlov | 6-4, 6-1 | | Matcha detaljer | Savannah Challenger | Lera |
| 11.04.15 | kval. 1 | Denis Matsukevitch | Stefan Kozlov | 6-2, 6-2 | | Matcha detaljer | Sarasota Challenger | Lera |