Riva Da Silva defeated Gabrio Castrichella 4-6 6-3 6-3 in the Portugal 3 Masters 4 round of 32 on clay. The upset overturned the form book — Gabrio Castrichella came in leading the head-to-head 2–0. Riva Da Silva claimed a first win over Gabrio Castrichella in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1993-10-01 | Portugal 3 Masters 4 | R32 | hard | Gabrio Castrichella | 6-4 2-6 6-4 |
| 1992-05-04 | Portugal 2 Masters 3 | R16 | clay | Gabrio Castrichella | 6-3 3-6 6-3 |