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Stefan Kozlov
Right-Handed, Two-Handed Backhand · Turned pro 2013 · 183cm
Stefan Kozlov is a professional tennis player from United States, 28 years old, ranked No. 292 on the ATP singles rankings as of September 21, 2026. Career-high ranking: No. 103 (July 18, 2022). Kozlov has won 11 career singles titles from 20 finals (6 at Challenger level, 5 at ITF level). Most recent title: Champaign Challenger (2025), beating Cassone 7-6(3), 7-5 in the final. In 2026 the record stands at 22-22 (0-2 at Tour level, 22-20 at Challenger level). Last match: lost to Blanch 6-3, 2-6, 7-6(10) in the R1 at Tiburon Challenger, September 15, 2026. Best surface by career win rate: grass (5–8).
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Recent results
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The last ten singles matches, from the results feed. Click a column header to sort.
Career record by surface
Ranking, recent weeks
Titles & finals
Win–loss by level · this season
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