Jesus Manteca Jurado defeated Juan Sebastian Martinez Nunez 6-2 6-0 in the Spain 4 Masters 1 round of 16 on hard. The upset overturned the form book — Juan Sebastian Martinez Nunez came in leading the head-to-head 1–0. Jesus Manteca Jurado claimed a first win over Juan Sebastian Martinez Nunez in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1992-06-15 | Spain 5 Masters 1 | R16 | clay | Juan Sebastian Martinez Nunez | 4-6 6-0 6-4 |