Rodrigo Antonio Grilli defeated Moacir Santos Filho 7-5 7-6 in the Brazil F21 round of 16 on clay. The result followed the form book — Rodrigo Antonio Grilli came in leading the head-to-head 1–0. Rodrigo Antonio Grilli extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-06-05 | Brazil F4 | R32 | clay | Rodrigo Antonio Grilli | 6-3 4-6 7-6(6) |