Marco Osorio defeated Armando Perez 6-0 6-2 in the Mexico 2 Masters 2 round of 32 on clay. The upset overturned the form book — Armando Perez came in leading the head-to-head 2–1. Marco Osorio narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-02-07 | Cuba Mexico Masters 3 | R16 | hard | Armando Perez | 6-2 6-4 |
| 1996-10-05 | Mexico 4 Masters 1 | QF | hard | Marco Osorio | 6-3 3-6 6-1 |
| 1995-09-30 | Mexico 4 Masters 3 | SF | hard | Armando Perez | 6-3 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.