Guillermo Rivera Aranguiz defeated Alex Theiler 6-3 6-1 in the Chile F4 round of 16 on clay. The result followed the form book — Guillermo Rivera Aranguiz came in leading the head-to-head 2–0. Guillermo Rivera Aranguiz extended the head-to-head to 3–0.
Rivera Aranguiz G. took it in straight sets.