Joao Zwetsch defeated Ramon Delgado 3-6 6-3 6-3 in the Central America Masters 4 round of 16 on hard. The upset overturned the form book — Ramon Delgado came in leading the head-to-head 1–0. Joao Zwetsch claimed a first win over Ramon Delgado in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1994-08-13 | Ecuador Peru Masters 2 | SF | clay | Ramon Delgado | 6-3 4-6 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.