Guillermo Rivera Aranguiz defeated Benjamin Ugarte 6-2 6-3 in the Chile F8 round of 16 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.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-12-10 | Chile F15 | R16 | clay | Guillermo Rivera Aranguiz | 7-5 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.