Maria Irigoyen defeated Soledad Esperon 6-4 5-7 6-4 in the Santo Andre 10K semi-final on hard. The upset overturned the form book — Soledad Esperon came in leading the head-to-head 2–0. Maria Irigoyen claimed a first win over Soledad Esperon in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-09-24 | Juarez 25K | R32 | clay | Soledad Esperon | 6-0 4-6 6-1 |
| 2006-11-13 | Mexico City 25K | R32 | clay | Soledad Esperon | 6-2 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.