07/26/2012 01:30 EDT | Updated 09/25/2012 05:12 EDT

Injured Ivo Karlovic replaced by Philipp Petzschner in Olympic tennis

WIMBLEDON, England - Ivo Karlovic of Croatia has withdrawn from the Olympics because of an injury, and he'll be replaced by Philipp Petzschner of Germany.

Petzschner will face Lukas Lacko of Slovakia in the first round. The change was announced shortly after Thursday's draw.

The 2.08-meter (6-foot-10) Karlovic was considered a dangerous floater in the draw because of his dominating serve.

Olympic tennis begins Saturday.