| Singles | |
|---|---|
| 2004 Mercedes-Benz Cup | |
| Champion |
|
| Runner-up |
|
| Final score | 7–6(8–6), 6–4 |
| Draw | 32 (4Q / 3WC) |
| Seeds | 8 |
Wayne Ferreira was the defending champion, but lost in the first round this year.
Tommy Haas won the tournament, beating Nicolas Kiefer in the final, 7–6(8–6), 6–4.