Olivia Sanchez defeated Marta Marrero 5-7 6-2 6-0 in the Cairo 25K round of 16 on clay. The upset overturned the form book — Marta Marrero came in leading the head-to-head 1–0, but Olivia Sanchez had been the form player, winning 6 of their last 10 on clay. Olivia Sanchez claimed a first win over Marta Marrero in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-06-22 | Getxo 25K | R16 | clay | Marta Marrero | 4-6 7-6(2) 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.