Guillermo Hormazabal defeated Gaston Giussani 6-3 6-4 in the Chile F4 round of 16 on clay. The result followed the form book — Guillermo Hormazabal came in leading the head-to-head 1–0. Guillermo Hormazabal extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-11-08 | Chile F4 | R16 | clay | Guillermo Hormazabal | 6-3 6-2 |