Filip Dewulf defeated Gonzalo Lopez Fabero 4-6 6-1 6-1 in the Spain 5 Masters 4 qualifying round on clay. The upset overturned the form book — Gonzalo Lopez Fabero 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 Gonzalo Lopez Fabero in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-05-20 | Spain 5 Masters 1 | SF | clay | Gonzalo Lopez Fabero | 6-3 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.