2009 BMW Tennis Championship – Singles

Robin Haase was the defending champion, but he did not defend his title due to an injury.
Robin Söderling, who would have been the 2nd seed, entered late and played the qualifying tournament. He was not seeded in the main draw, but he defeated: Müller, Bolelli, Schüttler, López and he reached the final. He won 6–1, 6–1, against 1st seeded Tomáš Berdych in the last match of this tournament.