Patricio Rudi defeated Brian Dabul 4-6 6-2 6-4 in the Chile 1 2 qualifying round on clay. The upset overturned the form book — Brian Dabul came in leading the head-to-head 2–0. Patricio Rudi claimed a first win over Brian Dabul in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-04-11 | Chile F2 | R32 | clay | Brian Dabul | 7-6(7) 7-6(4) |
| 2002-11-11 | Uruguay F1 | R32 | clay | Brian Dabul | 3-6 6-3 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.