Filip Dewulf defeated Mario Carnevale 6-1 6-2 in the Spain 5 Masters 3 qualifying round on clay. The upset overturned the form book — Mario Carnevale came in leading the head-to-head 1–0, but Filip Dewulf had been the form player, winning 4 of their last 8 on clay. Filip Dewulf claimed a first win over Mario Carnevale in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-03-04 | Spain 3 Masters 2 | R32 | clay | Mario Carnevale | 6-3 1-6 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.