Filippo Grasso defeated Pierre Bouteyre 2-6 6-3 6-2 in the Brazil 2 Masters 4 qualifying round on clay. The upset overturned the form book — Pierre Bouteyre came in leading the head-to-head 1–0. Filippo Grasso claimed a first win over Pierre Bouteyre in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-04-15 | Brazil 2 Masters 2 | R16 | clay | Pierre Bouteyre | 6-1 7-5 |