Maria Constanza De Las Mercedes Vega defeated Carla Lucero 2-6 6-2 6-2 in the Buenos Aires 10K round of 32 on clay. The upset overturned the form book — Carla Lucero came in leading the head-to-head 1–0. Maria Constanza De Las Mercedes Vega claimed a first win over Carla Lucero in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2014-08-04 | Santa Fe 10K | QF | clay | Carla Lucero | 7-5 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.