Antonio Prieto defeated Francisco Costa 6-3 6-4 in the Brazil 4 Masters 4 semi-final on clay. The upset overturned the form book — Francisco Costa came in leading the head-to-head 1–0. Antonio Prieto claimed a first win over Francisco Costa in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1996-11-16 | Brazil 5 Masters 4 | QF | clay | Francisco Costa | 6-4 3-6 6-0 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.