Stefan Kozlov leads 2 to 0 over 2 singles meetings since 2021. Last meeting on 12/04/2026 at Tallahassee Challenger.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 12/04/2026 | Tallahassee Challenger | Qualifying 1 | clay | Kozlov | 6-0 6-4 |
| 31/05/2021 | Little Rock Challenger | Qualifiers | hard | Kozlov | 6-3 6-2 |
| clay | Kozlov 1 - 0 Kirchheimer |
| hard | Kozlov 1 - 0 Kirchheimer |
| 2026 | Kozlov 1 - 0 Kirchheimer |
| 2021 | Kozlov 1 - 0 Kirchheimer |
149 wins, 114 losses since 2021 (56.7%).
Last matches: V V V V V
155 wins, 160 losses since 2021 (49.2%).
Last matches: D D D D V
Stefan Kozlov leads 2 to 0 over 2 singles meetings since 2021.
On 12/04/2026, at Tallahassee Challenger (Qualifying 1): Stefan Kozlov won 6-0 6-4.