Roddick and Schalken through

Second seed Andy Roddick has joined Roger Federer in the fourth round of Wimbledon, beating Taylor Dent 6-3, 7-6 (8-6), 7-6 (7-1).

Seventeenth seed Jonas Bjorkman was ejected from the tournament by fellow Swede Joachim Johansson 6-7 (5-7), 7-6 (7-5), 7-6 (8-6), 6-3.