Altug Celikbilek defeated Mert Naci Turker 6-3 6-1 in the Turkey F23 round of 32 on hard. The upset overturned the form book — Mert Naci Turker came in leading the head-to-head 1–0, but Altug Celikbilek had been the form player, winning 8 of their last 10 on hard. Altug Celikbilek claimed a first win over Mert Naci Turker in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2017-06-19 | Turkey F24 | R32 | clay | Mert Naci Turker | 6-7(1) 7-6(3) 6-4 |
Averages over each player's completed matches in the selected window (200 vs 164). 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