Carlos Avellan defeated Joao Souza 3-6 6-1 6-3 in the Brazil F18 round of 16 on clay. The upset overturned the form book — Joao Souza came in leading the head-to-head 1–0, but Carlos Avellan had been the form player, winning 4 of their last 6 on clay. Carlos Avellan claimed a first win over Joao Souza in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-10-30 | Brazil F17 | R16 | clay | Joao Souza | 7-6(5) 2-6 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.