Matias Oneille defeated Eduardo Medica 0-6 6-3 6-2 in the Brazil F1 round of 32 on clay. The upset overturned the form book — Eduardo Medica came in leading the head-to-head 2–0, but Matias Oneille had been the form player, winning 5 of their last 10 on clay. Matias Oneille claimed a first win over Eduardo Medica in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2000-06-12 | Argentina 4 | R16 | clay | Eduardo Medica | 4-6 7-6(4) 6-1 |
| 2000-02-26 | Chile F2 | QF | clay | Eduardo Medica | 6-3 6-1 |