Historique des matchs du joueur de tennis: Retrouvez ici la totalité des matchs et tournois joués par Stefan Kozlov.
263 matchs enregistrés.
| 08/11/2026 | Charlottesville Challenger | Stefan Kozlov vs. Aidan Mayo |
| 07/11/2026 | Charlottesville Challenger | Clement Chidekh vs. Stefan Kozlov |
| 06/11/2026 | Charlottesville Challenger | Stefan Kozlov vs. Braden Shick |
| 04/11/2026 | Charlottesville Challenger | Murphy Cassone vs. Stefan Kozlov |
| 03/11/2026 | Charlottesville Challenger | Stefan Kozlov vs. Andres Martin |
| 29/10/2026 | Sioux Falls Challenger | Max Hans Rehberg vs. Stefan Kozlov |
| 27/10/2026 | Sioux Falls Challenger | Stefan Kozlov vs. Murphy Cassone |
| 01/10/2026 | Columbus Challenger | Stefan Kozlov vs. Mitchell Krueger |
| 30/09/2026 | Columbus Challenger | Stefan Kozlov vs. James Kent Trotter |
| 22/09/2026 | San Diego 2 Challenger | Stefan Kozlov vs. Colton Smith |
| 14/09/2026 | Tiburon Challenger | Darwin Blanch vs. Stefan Kozlov |
| 13/08/2026 | Brownsburg Challenger | Stefan Kozlov vs. Harry Wendelken |
| 12/08/2026 | Brownsburg Challenger | Stefan Kozlov vs. Aidan Mayo |
| 25/07/2026 | Citi Open - Washington | Zachary Svajda vs. Stefan Kozlov |
| 21/07/2026 | Bloomfield Hills Challenger | Stefan Kozlov vs. Alan Magadan |
| 20/07/2026 | Bloomfield Hills Challenger | Stefan Kozlov vs. Roger Pascual Ferra |
| 19/07/2026 | Bloomfield Hills Challenger | Stefan Kozlov vs. Leo Vithoontien |
| 14/07/2026 | Pozoblanco Challenger | Yi Zhou vs. Stefan Kozlov |
| 10/07/2026 | Newport Challenger | Jacob Fearnley vs. Stefan Kozlov |
| 09/07/2026 | Newport Challenger | Stefan Kozlov vs. Yibing Wu |