Hector Moretti defeated Fabian Blengino 3-6 6-2 6-2 in the Brazil 1 Masters 4 round of 16 on clay. The upset overturned the form book — Fabian Blengino came in leading the head-to-head 2–0. Hector Moretti claimed a first win over Fabian Blengino in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-11-18 | Arg Uru Par Masters 1 | SF | clay | Fabian Blengino | 6-1 6-2 |
| 1991-03-18 | Brazil 1 Masters 3 | R32 | clay | Fabian Blengino | 7-6 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.