Patricio Heras defeated Guillermo Hormazabal 6-4 6-7 6-4 in the Colombia F4 semi-final on clay. The upset overturned the form book — Guillermo Hormazabal came in leading the head-to-head 1–0. Patricio Heras claimed a first win over Guillermo Hormazabal in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-11-21 | Chile F14 | SF | clay | Guillermo Hormazabal | 6-2 7-6(3) |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.