Damir Dzumhur defeated Ivan Sergeyev 6-2 4-6 6-0 in the Turkey F4 qualifying round on hard. The upset overturned the form book — Ivan Sergeyev came in leading the head-to-head 1–0. Damir Dzumhur claimed a first win over Ivan Sergeyev in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-01-23 | Turkey F3 | R32 | hard | Ivan Sergeyev | 4-6 6-0 7-6(5) |
Averages over each player's completed matches in the selected window (200 vs 27). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Per-surface Serve / Return Rating (0–100, percentile within the hard field, opponent-adjusted over 52 weeks). About