Olivier Soules defeated Thierry Guardiola 7-5 6-2 in the Netherlands Masters 3 final on clay. The upset overturned the form book — Thierry Guardiola came in leading the head-to-head 1–0. Olivier Soules claimed a first win over Thierry Guardiola in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-06-24 | Netherlands Masters 4 | SF | clay | Thierry Guardiola | 6-2 7-5 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.