Juan Gisbert Jr defeated German Lopez 7-5 6-4 in the Spain 5 Masters 2 round of 32 on clay. The upset overturned the form book — German Lopez came in leading the head-to-head 1–0. Juan Gisbert Jr claimed a first win over German Lopez in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-03-04 | Spain 3 Masters 4 | QF | clay | German Lopez | 6-1 6-3 |