Maria Constanza De Las Mercedes Vega defeated Guadalupe Moreno 6-3 6-2 in the Marcos Juarez 10K round of 16 on clay. The upset overturned the form book — Guadalupe Moreno came in leading the head-to-head 1–0. Maria Constanza De Las Mercedes Vega claimed a first win over Guadalupe Moreno in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2014-02-24 | Buenos Aires 10K | R16 | clay | Guadalupe Moreno | 6-3 6-0 |