Sander Groen defeated Alois Beust 6-4 6-3 in the France 1 Masters 4 round of 32 on carpet. The upset overturned the form book — Alois Beust came in leading the head-to-head 1–0. Sander Groen claimed a first win over Alois Beust in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-07-22 | France 2 Masters 4 | R16 | clay | Alois Beust | 7-6 6-4 |