Guillermo Hormazabal defeated Juan Sebastian Vivanco 6-3 4-6 6-3 in the Chile F11 round of 16 on clay. The result followed the form book — Guillermo Hormazabal came in leading the head-to-head 2–0. Guillermo Hormazabal extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-10-03 | Chile F7 | QF | clay | Guillermo Hormazabal | 6-2 6-1 |
| 2011-04-11 | Chile F3 | R32 | clay | Guillermo Hormazabal | 6-2 6-1 |