Historique des matchs du joueur de tennis: Retrouvez ici la totalité des matchs et tournois joués par Stefan Kozlov.
254 matchs enregistrés.
| 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 |
| 07/07/2026 | Newport Challenger | Stefan Kozlov vs. Garrett Johns |
| 05/07/2026 | Newport Challenger | Stefan Kozlov vs. Aidan Mayo |
| 22/04/2026 | Savannah Challenger | Stefan Kozlov vs. Nick Hardt |
| 20/04/2026 | Savannah Challenger | Daniil Glinka vs. Stefan Kozlov |
| 14/04/2026 | Tallahassee Challenger | Stefan Kozlov vs. Alex Rybakov |
| 13/04/2026 | Tallahassee Challenger | Stefan Kozlov vs. Kilian Feldbausch |
| 12/04/2026 | Tallahassee Challenger | Stefan Kozlov vs. Strong Kirchheimer |
| 09/04/2026 | Mexico City Challenger | James Duckworth vs. Stefan Kozlov |
| 07/04/2026 | Mexico City Challenger | Raphael Perot vs. Stefan Kozlov |