Mariana Muci Torres defeated Nataly Yoo 6-4 6-2 in the Cordoba 10K round of 32 on clay. The upset overturned the form book — Nataly Yoo came in leading the head-to-head 1–0. Mariana Muci Torres claimed a first win over Nataly Yoo in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-10-29 | Bogota 10K | QF | clay | Nataly Yoo | 6-3 6-2 |