Murray cruises into U.S. Open fourth round

Defending champion Andy Murray waltzed over his opponent and into the fourth round of the U.S. Open on Sunday.

Murray, who is trying to win back-to-back majors after taking Wimbledon, never lost his serve against Florian Mayer and rolled to a 7-6 (7-2), 6-2, 6-2 victory in a match that took just under two hours at Arthur Ashe Stadium.

Murray's opponent in last year's final, World No. 1 superstar Novak Djokovic, has a third-round match later Sunday against Joao Sousa.

Two other top-10 seeds moved on, as fifth-seeded Tomas Berdych had no trouble disposing of No. 31 Julien Benneteau 6-0, 6-3, 6-2 and ninth-seeded Stanislas Wawrinka got by Marcos Baghdatis, 6-3, 6-2, 6-7 (1-7), 7-6 (9-7).