Guillermo Rivera Aranguiz defeated Gustavo Guerses 6-4 3-6 6-2 in the Chile F16 round of 32 on clay. The result followed the form book — Guillermo Rivera Aranguiz came in leading the head-to-head 1–0. Guillermo Rivera Aranguiz extended the head-to-head to 2–0.
Rivera Aranguiz G. came through in three sets.
Guillermo Rivera Aranguiz beat Gustavo Guerses 6-4 3-6 6-2. Umpiry, "Guillermo Rivera Aranguiz vs Gustavo Guerses — Chile F16 Round of 32", https://umpiry.com/match/2012-12-17/aranguiz-vs-guerses-chile-f16-r32?utm_source=cite (as of 17 December 2012).