| Singles | |
|---|---|
| 2004 BMW Open | |
| Champion |  Nikolay Davydenko | 
| Runner-up |  Martin Verkerk | 
| Final score | 6–4, 7–5 | 
| Draw | 32 (4Q / 3WC) | 
| Seeds | 8 | 
Roger Federer was the defending champion but did not compete that year.
Nikolay Davydenko won in the final 6–4, 7–5 against Martin Verkerk.