Marko Neunteibl defeated Brian Dabul 6-3 7-6 in the Uruguay F1 qualifying round on clay. The upset overturned the form book — Brian Dabul came in leading the head-to-head 1–0. Marko Neunteibl claimed a first win over Brian Dabul in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2003-10-20 | Argentina F4 | R16 | clay | Brian Dabul | 7-6(5) 7-6(6) |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.