Armando Perez defeated Marco Antonio Zuniga 6-1 6-4 in the Mexico 4 Masters 4 round of 32 on hard. The upset overturned the form book — Marco Antonio Zuniga came in leading the head-to-head 1–0. Armando Perez claimed a first win over Marco Antonio Zuniga in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1994-07-02 | Mexico 3 Masters 1 | R16 | hard | Marco Antonio Zuniga | 5-0 |