Andres Molteni defeated Gaston Arturo Grimolizzi 6-1 4-6 6-1 in the Brazil F1 round of 16 on clay. The upset overturned the form book — Gaston Arturo Grimolizzi came in leading the head-to-head 1–0. Andres Molteni claimed a first win over Gaston Arturo Grimolizzi in two meetings, levelling the head-to-head at 1–1.
Molteni A. came through in three sets.
Andres Molteni beat Gaston Arturo Grimolizzi 6-1 4-6 6-1. Umpiry, "Andres Molteni vs Gaston Arturo Grimolizzi — Brazil F1 Round of 16", https://umpiry.com/match/2008-04-21/grimolizzi-vs-molteni-brazil-f1-r16?utm_source=cite (as of 21 April 2008).