Nathan Thompson defeated Frederico Casaro 6-7 6-2 7-5 in the Brazil F19 round of 16 on clay. The result followed the form book — Nathan Thompson came in leading the head-to-head 1–0. Nathan Thompson extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-12-04 | Brazil F22 | R32 | hard | Nathan Thompson | 6-4 6-4 |