Oscar Ortiz defeated Gerardo Martinez 6-2 6-3 in the Central America Masters 4 round of 16 on hard. The result followed the form book — Oscar Ortiz came in leading the head-to-head 1–0. Oscar Ortiz extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-02-16 | Central America Masters 3 | R32 | hard | Oscar Ortiz | 6-2 6-4 |