Guadalupe Moreno defeated Emilia Yorio 6-4 6-3 in the Buenos Aires 10K round of 32 on clay. The upset overturned the form book — Emilia Yorio came in leading the head-to-head 3–0. Guadalupe Moreno claimed a first win over Emilia Yorio in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-10-26 | Fortaleza 10K | QF | clay | Emilia Yorio | 6-3 6-3 |
| 2009-04-20 | Buenos Aires 10K | R32 | clay | Emilia Yorio | 6-1 6-3 |
| 2008-08-25 | Buenos Aires 10K | R32 | clay | Emilia Yorio | 3-6 6-3 6-2 |