Mathias Huning defeated Gabrio Castrichella 6-2 6-4 in the Portugal 3 Masters 3 round of 32 on clay. The upset overturned the form book — Gabrio Castrichella came in leading the head-to-head 1–0. Mathias Huning claimed a first win over Gabrio Castrichella in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1993-05-28 | Belgium Masters 4 | R16 | clay | Gabrio Castrichella | 6-4 6-4 |