Guadalupe Perez Rojas defeated Daiana Negreanu 6-4 7-6 in the Sao Paulo $25K round of 32 on clay. The upset overturned the form book — Daiana Negreanu came in leading the head-to-head 1–0. Guadalupe Perez Rojas claimed a first win over Daiana Negreanu in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-10-10 | Sao Paolo 10K | R32 | clay | Daiana Negreanu | 6-4 4-6 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.