Top seed Roger Federer and Olympic gold medalist Andy Murray were among Saturday's third-round winners at the U.S. Open.

The 17-time Grand Slam king Federer, who captured his seventh Wimbledon title in July, needed just over two hours to beat 25th-seeded Spaniard Fernando Verdasco 6-3, 6-4, 6-4 at Arthur Ashe Stadium.

The super Swiss, who is tied with Jimmy Connors and Pete Sampras with five U.S. Open titles, is also going for his seventh championship this year.

Federer won 26-of-27 net point opportunities on Saturday.

"I had no clue my stats were that good coming in," Federer said. "Fernando did have some good chances for good passing shots. Looking back, I don't remember missing too many volleys and overheads, all that stuff. Probably half the time I didn't have to volley because it was hard to hit a good pass."

Federer will play 23rd-seeded American Mardy Fish in the fourth round. Fish downed 16th-seeded Gilles Simon of France, 6-1, 5-7, 7-6 (7-5), 6-3 in a late- night match.

The third-seeded Murray took down 30th-seeded Spaniard Feliciano Lopez 7-6 (7-5), 7-6 (7-5), 4-6, 7-6 (7-4).

"It was tough. It was physically challenging," Murray said. "I actually felt better towards the end of the match than I did maybe halfway through it."

The British star Murray beat Federer in the gold medal match at the London Olympics last month and lost to Federer in the Wimbledon final this year.

Murray, who was the 2008 U.S. Open runner-up to Federer, will face Milos Raonic, the No. 15 seed from Canada. Raonic breezed past American James Blake, 6-3, 6-0, 7-6 (7-3) Saturday.

Spaniard Nicolas Almagro, the No. 11 seed, beat American Jack Sock 7-6 (7-3), 6-7 (4-7), 7-6 (7-2), 6-1; No. 12 seed Marin Cilic of Croatia got past 17th- seeded Kei Nishikori of Japan 6-3, 6-4, 6-7 (3-7), 6-3; and Martin Klizan of Slovakia defeated 32nd-seeded Frenchman Jeremy Chardy 6-4, 6-4, 6-4.

Almagro's next match will be against sixth-seeded Czech Tomas Berdych, who ousted 27th-seeded American Sam Querrey, 6-7 (6-8), 6-4, 6-3, 6-2.