Maximo Gonzalez defeated Marko Neunteibl 7-6 6-2 in the Chile 1 3 qualifying round on clay. The upset overturned the form book — Marko Neunteibl came in leading the head-to-head 2–0, but Maximo Gonzalez had been the form player, winning 6 of their last 9 on clay. Maximo Gonzalez claimed a first win over Marko Neunteibl in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-11-08 | Chile F3 | QF | clay | Marko Neunteibl | 6-2 2-6 6-3 |
| 2004-03-08 | Chile 1 2 | R32 | clay | Marko Neunteibl | 6-4 2-6 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.