Maria Constanza De Las Mercedes Vega defeated Julieta Lara Estable 6-2 2-6 6-3 in the Lima 10K semi-final on clay. The upset overturned the form book — Julieta Lara Estable came in leading the head-to-head 3–1. Maria Constanza De Las Mercedes Vega narrowed the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2015-04-27 | Villa del Dique $10K | R16 | clay | Maria Constanza De Las Mercedes Vega | 6-4 6-4 |
| 2014-06-16 | Villa Maria 10K | R32 | clay | Julieta Lara Estable | 6-4 6-2 |
| 2014-06-09 | Villa Del Dique 10K | SF | clay | Julieta Lara Estable | 6-2 6-2 |
| 2013-11-04 | Buenos Aires 10K | QF | clay | Julieta Lara Estable | 6-3 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.