Haluk Akkoyun defeated Marsel Ilhan 6-2 4-6 6-2 in the Turkey F1 round of 32 on clay. The upset overturned the form book — Marsel Ilhan came in leading the head-to-head 2–0. Haluk Akkoyun claimed a first win over Marsel Ilhan in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-04-06 | Turkey F4 | R16 | hard | Marsel Ilhan | 6-1 6-3 |
| 2008-04-14 | Turkey F4 | R32 | clay | Marsel Ilhan | 6-3 7-6(8) |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.