Guillermo Hormazabal defeated Cristobal Saavedra Corvalan 6-4 6-3 in the Chile F8 semi-final on clay. The upset overturned the form book — Cristobal Saavedra Corvalan came in leading the head-to-head 1–0. Guillermo Hormazabal claimed a first win over Cristobal Saavedra Corvalan in two meetings, levelling the head-to-head at 1–1.
Hormazabal G. took it in straight sets.
Guillermo Hormazabal beat Cristobal Saavedra Corvalan 6-4 6-3. Umpiry, "Guillermo Hormazabal vs Cristobal Saavedra Corvalan — Chile F8 Semi-final", https://umpiry.com/match/2011-10-10/corvalan-vs-hormazabal-chile-f8-sf?utm_source=cite (as of 10 October 2011).