NEW YORK - Top-seeded Roger Federer returned to the U.S. Open on Monday and defeated Donald Young 6-3, 6-2, 6-4 to improve his career record to 62-7 at Flushing Meadows.

Looking to extend his record with an 18th Grand Slam title, Federer finished with seven aces and needed only 1 hour, 34 minutes to dispatch Young, an American who endured a 17-match losing streak earlier in the year.

Federer, winner earlier this year at Wimbledon and the Olympic silver medalist, came into the U.S. Open seeded first for the 23rd time at a Grand Slam, breaking the record he shared with Pete Sampras.

Federer had left the U.S. Open the last two years after semifinal losses to Novak Djokovic.

"Being back in New York as world No. 1, it's crazy, and I really, really enjoy it," Federer said.

Andy Murray weathered a slow start in the latest stop of this long, successful summer.

Seeking that elusive first Grand Slam title, Murray began his U.S. Open campaign with a straight-set victory over Alex Bogomolov Jr. that included some hairy moments. The Olympic gold medalist overcame early breaks in the first two sets of a 6-2, 6-4, 6-1 win.

The third-seeded Murray won the final five games of the first set and the last four games of the second after falling behind early against the 73rd-ranked Bogomolov.

Murray is trying to become the first man to win the Olympics and the U.S. Open in the same year. His first match of 2012 at Flushing Meadows gave him a decent test - with just a little something to worry about.

Mike Ehrmann / Getty Images The Week in Sports Pictures The nation grieved for those hurt, killed and affected by the Boston Marathon bombings. After one of the suspects was caught on Friday — following a day-long lockdown and manhunt — sports returned to Boston over the weekend.

He fell down a break to open the first two sets but won the last five games of the first and last four games of the second, then cruised in the third, which he began by shouting "focus."

"It's an important stage of the match, when he was up 4-3 in the second with a break, then I won three games in a row and momentum was with me," Murray said. "You want to win the matches as quickly as possible."

He finished with 46 winners to 24 for Bogomolov, and handled the array of drop shots Bogomolov tried on him. Leading 4-1 in the third set, Murray grabbed his left hamstring while lunging for a ball near the net. But he closed out the match with no problem.

"Maybe I didn't take enough fluid," Murray said.

James Blake reached the second round of a Grand Slam event for the first time this year, beating Lukas Lacko 7-5, 6-2, 3-6, 6-3. The 32-year-old American needed a wild card to make his 12th appearance at the Open after his ranking fell out of the top 100. He hadn't lost in the first round at Flushing Meadows since his debut in 1999.

Blake, who has twice made the quarterfinals at the Open, won the first two sets against the 54th-ranked Lacko before the rain delay.

The American men got off to a good start with wins by two wild cards, 32-year-old James Blake and 19-year-old Jack Sock.

Sock took a two-set lead over Florian Mayer before the No. 22 seed quit after feeling faint and dizzy. Sock won the U.S. Open boys championship in 2010, becoming the first American to take that title since Andy Roddick, 10 years earlier. He came into this year's tournament ranked 248th and without a win over a top-50 player.

Sock was ahead 6-3, 6-2, 3-2 when Mayer retired.

Blake reached the second round of a Grand Slam event for the first time this year, beating Lukas Lacko 7-5, 6-2, 3-6, 6-3. He had needed a wild card to make his 12th appearance at the Open after his ranking fell out of the top 100. He hadn't lost in the first round at Flushing Meadows since his debut in 1999.

Blake, who has twice made the quarterfinals at the Open, won the first two sets against the 54th-ranked Lacko before the rain delay.