Melissa Torres Sandoval defeated Frederica Piedade 3-6 6-2 7-5 in the Mexico City 10K qualifying round on hard. The upset overturned the form book — Frederica Piedade came in leading the head-to-head 3–0. Melissa Torres Sandoval claimed a first win over Frederica Piedade in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-10-30 | Mexico City 25K | R32 | hard | Frederica Piedade | 6-4 6-4 |
| 2005-10-10 | Victoria 25K | R32 | hard | Frederica Piedade | 6-0 4-6 6-1 |
| 2004-10-11 | Mexico City 25K | F | hard | Frederica Piedade | 7-5 6-2 |
Averages over each player's completed matches in the selected window (5 vs 4). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About