Sofia Luini defeated Maria Constanza De Las Mercedes Vega 7-6 7-6 in the San Carlos $10K round of 32 on clay. The upset overturned the form book — Maria Constanza De Las Mercedes Vega came in leading the head-to-head 2–1. Sofia Luini narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2014-10-13 | Lima 10K | R32 | clay | Sofia Luini | 2-6 7-5 6-2 |
| 2013-05-06 | Villa Maria 10K | R16 | clay | Maria Constanza De Las Mercedes Vega | 6-2 6-3 |
| 2013-04-29 | Villa Allende 10K | QF | clay | Maria Constanza De Las Mercedes Vega | 6-2 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.