| Singles | |
|---|---|
| 2009 Gerry Weber Open | |
| Champion |
|
| Runner-up |
|
| Final score | 6–3, 6–7(4–7), 6–1 |
Roger Federer was the defending champion, but withdrew due to fatigue, after winning the 2009 French Open.
Tommy Haas won in the final 6–3, 6–7(4–7), 6–1, against Novak Djokovic.