| Singles | |
|---|---|
| 2003 Gerry Weber Open | |
| Champion |
|
| Runner-up |
|
| Final score | 6–1, 6–3 |
Yevgeny Kafelnikov was the defending champion but lost in the first round to Karol Kučera.
Roger Federer won in the final 6–1, 6–3 against Nicolas Kiefer.
A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.