Paula Ormaechea defeated Mariana Demichelli Vergara 6-0 6-0 in the Buenos Aires 10K round of 32 on clay. The upset overturned the form book — Mariana Demichelli Vergara came in leading the head-to-head 1–0, but Paula Ormaechea had been the form player, winning 6 of their last 9 on clay. Paula Ormaechea claimed a first win over Mariana Demichelli Vergara in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-10-13 | Lima 10K | R32 | clay | Mariana Demichelli Vergara | 7-6(5) 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.