Helga Vieira defeated Daniela Olivera 5-7 6-4 6-3 in the Mexico Circuit 4 40K round of 16 on hard. The upset overturned the form book — Daniela Olivera came in leading the head-to-head 2–0, defending last year's final. Helga Vieira claimed a first win over Daniela Olivera in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2000-05-08 | Tampico 10K | QF | hard | Daniela Olivera | 6-2 5-7 6-2 |
| 2000-04-08 | Belo Horizonte 10K | QF | hard | Daniela Olivera | 6-4 2-6 6-1 |