Aleksandrina Naydenova defeated Andrea Koch Benvenuto 6-4 6-4 in the Rancagua 10K semi-final on clay. The upset overturned the form book — Andrea Koch Benvenuto came in leading the head-to-head 1–0. Aleksandrina Naydenova claimed a first win over Andrea Koch Benvenuto in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-10-03 | Yerevan 25K | QF | clay | Andrea Koch Benvenuto | 6-2 6-7(4) 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.