Diego Del Rio defeated Diego Varela 7-5 7-5 in the Argentina 2 Masters 2 final on clay. The upset overturned the form book — Diego Varela came in leading the head-to-head 1–0. Diego Del Rio claimed a first win over Diego Varela in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-07-15 | Brazil 5 Masters 2 | QF | clay | Diego Varela | 6-2 7-5 |