Martin Rodriguez defeated Roberto Alvarez 6-2 4-6 7-5 in the Argentina 3 Masters 3 round of 16 on clay. The upset overturned the form book — Roberto Alvarez came in leading the head-to-head 2–0. Martin Rodriguez claimed a first win over Roberto Alvarez in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-11-18 | Arg Uru Par Masters 3 | R32 | clay | Roberto Alvarez | 7-6 6-4 |
| 1991-07-22 | France 2 Masters 1 | R32 | clay | Roberto Alvarez | 6-1 3-6 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.