Guillermo Rivera Aranguiz defeated Sebastian Decoud 6-2 3-6 6-3 in the Chile F6 semi-final on clay. The upset overturned the form book — Sebastian Decoud came in leading the head-to-head 2–0. Guillermo Rivera Aranguiz claimed a first win over Sebastian Decoud in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-08-23 | Colombia F2 | F | clay | Sebastian Decoud | 7-6(6) 7-5 |
| 2010-08-16 | Colombia F1 | F | clay | Sebastian Decoud | 6-4 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.