Ana Lucia Migliarini De Leon defeated Maria Jose Argeri 7-5 7-6 in the Mexico Circuit 3 40K round of 32 on hard. The upset overturned the form book — Maria Jose Argeri came in leading the head-to-head 1–0. Ana Lucia Migliarini De Leon claimed a first win over Maria Jose Argeri in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-10-04 | Juarez 25K | R32 | clay | Maria Jose Argeri | 6-2 6-4 |