Andrea Koch Benvenuto defeated Carla Beltrami 6-3 6-2 in the Buenos Aires 10K round of 16 on clay. The upset overturned the form book — Carla Beltrami came in leading the head-to-head 2–1. Andrea Koch Benvenuto narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-09-07 | Mazatlan Sin 10K | QF | hard | Andrea Koch Benvenuto | 7-6(3) 6-0 |
| 2009-03-23 | Lima 10K | R16 | clay | Carla Beltrami | 6-4 1-6 6-1 |
| 2008-11-10 | Santiago 10K | QF | clay | Carla Beltrami | 6-3 2-6 6-1 |