Third-seeded Marco Baghdatis of Cyprus had little trouble in beating Danai Udomchoke of Thailand 6-2, 6-1 and will play the winner of the quarter-final between Nikolay Davydenko and Paradorn Srichaphan.

Lee will next face fourth-seeded Mario Ancic of Croatia. Ancic recovered from a poor start to grind out a 2-6, 7-6 (4), 6-4 victory over fifth-seeded Dominik Hrbaty of Slovakia.

After losing the first set, Ancic fought off three break points in the second to force a tiebreaker. Ancic, who has been sidelined since Wimbledon because of injury, found his rhythm in the third set. Ancic finished with 13 aces while Hrbaty had two aces and eight double-faults.