Alois Beust defeated Sebastien Mattieu 6-3 6-3 in the Italy 2 Masters 1 round of 32 on clay. The upset overturned the form book — Sebastien Mattieu came in leading the head-to-head 1–0. Alois Beust claimed a first win over Sebastien Mattieu in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-09-09 | France 3 Masters 1 | R16 | carpet | Sebastien Mattieu | 6-3 7-6 |