Rodrigo Guidolin defeated Caio Zampieri 4-6 7-6 6-3 in the Brazil F14 qualifying round on clay. The upset overturned the form book — Caio Zampieri came in leading the head-to-head 2–0, but Rodrigo Guidolin had been the form player, winning 5 of their last 9 on clay. Rodrigo Guidolin claimed a first win over Caio Zampieri in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-07-05 | Brazil F12 | R32 | clay | Caio Zampieri | 5-2 |
| 2005-05-09 | Brazil F3 | SF | clay | Caio Zampieri | 6-1 2-6 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.