| Singles | |
|---|---|
| 2004 Movistar Open | |
| Champion |
|
| Runner-up |
|
| Final score | 6–4, 7–5 |
David Sánchez was the defending champion, but lost in the semifinals this year.
Fernando González won the title, defeating Gustavo Kuerten 6–4, 7–5 in the final.
A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.