Katherine Gabriela Miranda Chang defeated Luciana Sarmenti 6-1 2-6 7-6 in the Santa Fe 10K round of 32 on clay. The upset overturned the form book — Luciana Sarmenti came in leading the head-to-head 2–0. Katherine Gabriela Miranda Chang claimed a first win over Luciana Sarmenti in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-04-11 | Cordoba 10K | R32 | clay | Luciana Sarmenti | 6-3 6-3 |
| 2008-10-20 | Lima 10K | R32 | clay | Luciana Sarmenti | 6-3 6-1 |