The semifinals will see Haas play American Mardy Fish, who downed his fellowman Vince Spadea 4-6, 7-6(1), 6-2.

Roddick fired 11 aces, but was broken four times, while he could only break the German fifth seed twice.

Haas bounced back from the loss of the hard-fought first set to win 6-7(1), 6-4, 6-4.

Fish, who is coming back from a wrist injury that sidelined him for much of last year, will be playing in his first ATP semifinal since June 2004.

In the bottom of the draw, seventh-seeded American Paul Goldstein posted a 6-3, 6-4 victory over Albert Montanes of Spain.

He advanced to a semi-final meeting with Austrian Jurgen Melzer, who beat Spain's Fernando Vicente 7-5, 6-4. Enditem

Editor:

Lin Li