Guadalupe Perez Rojas defeated Sofia Blanco 6-4 1-6 6-2 in the Sao Paulo 10K round of 32 on clay. The upset overturned the form book — Sofia Blanco came in leading the head-to-head 2–0, but Guadalupe Perez Rojas had been the form player, winning 3 of their last 6 on clay. Guadalupe Perez Rojas claimed a first win over Sofia Blanco in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-09-16 | Rosario 10K | R16 | clay | Sofia Blanco | 2-6 6-4 6-2 |
| 2012-10-22 | Luque 10K | R32 | clay | Sofia Blanco | 6-2 6-0 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.