Lucas Engel defeated Thiago Alves 7-5 4-6 7-6 in the Brazil F5 semi-final on clay. The upset overturned the form book — Thiago Alves came in leading the head-to-head 2–0. Lucas Engel claimed a first win over Thiago Alves in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-11-01 | Brazil F12 | QF | clay | Thiago Alves | 4-6 6-4 6-3 |
| 2004-10-25 | Brazil F11 | SF | hard | Thiago Alves | 4-6 7-5 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.