Alexandre Simoni defeated Antonio Prieto 7-6 6-4 in the Brazil F5 round of 32 on clay. The upset overturned the form book — Antonio Prieto came in leading the head-to-head 1–0. Alexandre Simoni claimed a first win over Antonio Prieto in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-11-02 | Brazil F3 | SF | hard | Antonio Prieto | 6-3 3-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.