Nicolas Becerra defeated Juan Rios 6-3 6-1 in the Caribbean 1 Masters 3 round of 16 on clay. The upset overturned the form book — Juan Rios came in leading the head-to-head 1–0. Nicolas Becerra claimed a first win over Juan Rios in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-03-30 | Caribbean 1 Masters 2 | QF | clay | Juan Rios | 3-6 6-2 6-3 |