Matias Sborowitz defeated Guillermo Rivera Aranguiz 4-6 7-5 6-3 in the Chile F14 round of 16 on clay. The upset overturned the form book — Guillermo Rivera Aranguiz came in leading the head-to-head 3–0, but Matias Sborowitz had been the form player, winning 5 of their last 10 on clay. Matias Sborowitz claimed a first win over Guillermo Rivera Aranguiz in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-12-09 | Chile F11 | R32 | clay | Guillermo Rivera Aranguiz | 6-0 6-2 |
| 2012-11-19 | Chile F12 | R32 | clay | Guillermo Rivera Aranguiz | 6-1 7-5 |
| 2011-11-14 | Chile F13 | SF | clay | Guillermo Rivera Aranguiz | 6-4 6-3 |
Averages over each player's completed matches in the selected window (2 vs 35). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About