Miguel Merz defeated Rodrigo Vallejo 7-6 6-4 in the Central America Masters 2 round of 32 on hard. The upset overturned the form book — Rodrigo Vallejo came in leading the head-to-head 1–0. Miguel Merz claimed a first win over Rodrigo Vallejo in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1993-04-24 | Caribbean 1 Masters 2 | R32 | clay | Rodrigo Vallejo | 6-7 6-4 6-4 |