Gaston Arturo Grimolizzi defeated Guillermo Hormazabal 6-7 6-4 6-4 in the Chile F3 round of 16 on clay. The upset overturned the form book — Guillermo Hormazabal came in leading the head-to-head 2–0. Gaston Arturo Grimolizzi claimed a first win over Guillermo Hormazabal in three meetings, narrowing the head-to-head to 2–1.
Grimolizzi G. came through in three sets.
Gaston Arturo Grimolizzi beat Guillermo Hormazabal 6-7(3) 6-4 6-4. Umpiry, "Gaston Arturo Grimolizzi vs Guillermo Hormazabal — Chile F3 Round of 16", https://umpiry.com/match/2010-11-01/grimolizzi-vs-hormazabal-chile-f3-r16?utm_source=cite (as of 1 November 2010).