Guillermo Rivera Aranguiz defeated Marcelo Plaza 6-1 6-0 in the Chile 11 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.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-05-21 | Chile F5 | R16 | clay | Guillermo Rivera Aranguiz | 7-5 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.