Juan Sebastian Martinez Nunez defeated Gonzalo Corrales 6-4 7-6 in the Spain 4 Masters 1 round of 32 on hard. The upset overturned the form book — Gonzalo Corrales came in leading the head-to-head 1–0. Juan Sebastian Martinez Nunez claimed a first win over Gonzalo Corrales in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1993-08-13 | Spain 6 Masters 1 | R16 | clay | Gonzalo Corrales | 6-3 4-6 6-3 |