Hernan Gumy defeated Juan Pablo Etchecoin 6-1 6-3 in the Brazil 1 Masters 4 round of 16 on clay. The upset overturned the form book — Juan Pablo Etchecoin came in leading the head-to-head 1–0. Hernan Gumy claimed a first win over Juan Pablo Etchecoin in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-05-13 | Brazil 3 Masters 2 | SF | clay | Juan Pablo Etchecoin | 4-6 6-4 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.