Rodrigo Guidolin defeated Joao Wiesinger 6-7 6-3 6-4 in the Brazil F27 round of 32 on clay. The upset overturned the form book — Joao Wiesinger came in leading the head-to-head 1–0. Rodrigo Guidolin claimed a first win over Joao Wiesinger in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-06-09 | Brazil F8 | R16 | clay | Joao Wiesinger | 4-6 6-3 1-2 |