Luciana Sarmenti defeated Andrea Koch Benvenuto 6-3 5-7 6-4 in the Lima 10K round of 16 on clay. The upset overturned the form book — Andrea Koch Benvenuto came in leading the head-to-head 2–0. Luciana Sarmenti claimed a first win over Andrea Koch Benvenuto in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-11-26 | Santiago 25K | R32 | clay | Andrea Koch Benvenuto | 6-4 6-4 |
| 2011-02-14 | Buenos Aires 10K | R32 | clay | Andrea Koch Benvenuto | 6-1 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.