Ipek Senoglu defeated Gulberk Gultekin 6-3 6-2 in the Istanbul 10K round of 32 on hard. The upset overturned the form book — Gulberk Gultekin came in leading the head-to-head 1–0, but Ipek Senoglu had been the form player, winning 1 of their last 5 on hard. Ipek Senoglu claimed a first win over Gulberk Gultekin in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-06-28 | Istanbul 10K | R16 | hard | Gulberk Gultekin | 6-3 6-7 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.