[Rusty Backhand]

Defending champion Roger Federer advanced to the quarterfinals of the Thailand Open on Thursday, beating German qualifier Denis Gremelmayr 6-3, 6-2 in just over an hour. In other second round matches, 18-year-old Andrew Murray of Britain upset fifth-seeded Robin Soderling of Sweden 7-6 (3) 7-6 (5), and next faces third-seeded Robby Ginepri of the United States.

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