Philipp Petzschner defeated Marsel Ilhan 3-6 6-0 6-4 in the Istanbul CH quarter-final on hard. The upset overturned the form book — Marsel Ilhan came in leading the head-to-head 1–0. Philipp Petzschner claimed a first win over Marsel Ilhan in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-07-18 | Hamburg | R64 | clay | Marsel Ilhan | 6-2 4-6 7-6(5) |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (40 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About