Guadalupe Moreno defeated Maria Constanza De Las Mercedes Vega 6-3 6-0 in the Buenos Aires 10K round of 16 on clay. The upset overturned the form book — Maria Constanza De Las Mercedes Vega came in leading the head-to-head 1–0. Guadalupe Moreno 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 |
|---|---|---|---|---|---|
| 2013-10-21 | Marcos Juarez 10K | R16 | clay | Maria Constanza De Las Mercedes Vega | 6-3 6-2 |