Carla Lucero defeated Maria Constanza De Las Mercedes Vega 7-5 6-2 in the Santa Fe 10K qualifying round on clay. The upset overturned the form book — Maria Constanza De Las Mercedes Vega came in leading the head-to-head 1–0, but Carla Lucero had been the form player, winning 7 of their last 10 on clay. Carla Lucero claimed a first win over Maria Constanza De Las Mercedes Vega in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-11-04 | Buenos Aires 10K | R32 | clay | Maria Constanza De Las Mercedes Vega | 2-6 6-2 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.