Federico Dondo defeated Gustavo Cavallaro 6-3 6-4 in the Argentina B Masters 1 round of 32 on clay. The upset overturned the form book — Gustavo Cavallaro came in leading the head-to-head 2–0. Federico Dondo claimed a first win over Gustavo Cavallaro in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1995-08-05 | Argentina B Masters 4 | R16 | clay | Gustavo Cavallaro | 6-4 6-7 6-3 |
| 1994-08-13 | Argentina 3 Masters 1 | R16 | clay | Gustavo Cavallaro | 2-6 7-6 6-0 |