Cagla Buyukakcay defeated Leticia Costas 6-1 6-3 in the Getxo 25K qualifying round on clay. The upset overturned the form book — Leticia Costas came in leading the head-to-head 1–0. Cagla Buyukakcay claimed a first win over Leticia Costas in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-07-07 | Valladolid 25K | R32 | hard | Leticia Costas | 6-3 4-6 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.