Tomas Berdych beat Philipp Petzschner of Germany 7-5, 6-4 Thursday to set up a possible Dubai Championships semifinal match against Australian Open champion Novak Djokovic.
The third-seeded Czech broke Petzschner three times in the first set but dropped serve twice. Berdych wasted six set points, closing it out when the 73rd-ranked German hit a forehand long.
The second set was just as close, with Berdych's decisive break making it 5-4.
Berdych now plays either the second-seeded Djokovic or Florian Mayer of Germany.