Maria Jose Argeri defeated Carla Tiene 6-7 7-6 6-3 in the Coatzacoalcos 25K round of 16 on hard. The upset overturned the form book — Carla Tiene came in leading the head-to-head 2–0, but Maria Jose Argeri had been the form player, winning 4 of their last 5 on hard. Maria Jose Argeri claimed a first win over Carla Tiene in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-10-16 | Victoria 25K | R16 | hard | Carla Tiene | 7-6(6) 6-2 |
| 2003-09-01 | Asuncion 10K | QF | clay | Carla Tiene | 6-2 6-0 |