Andy Roddick to retire after U.S. Open

For years he's been the biggest draw at the U.S. Open. On Thursday, Andy Roddick announced that the Open will be the last tournament he plays.

The former world No. 1 announced his retirement at a news conference in advance of his second-round match Friday against Bernard Tomic.

"I have decided that this is going to be my last tournament," Roddick said. "I don't know if I'm healthy enough or committed enough to continue another year."

Roddick made the announcement on his 30th birthday, after several injury-plagued seasons knocked him from his perch among the elite singles players in tennis.

"Walking off at Wimbledon, I felt like I knew," he said.

The 2003 U.S. Open is the only Grand Slam tournament that the American Roddick won. He was the No. 1 player in the world in 2003-2004, until he was knocked off his perch by Roger Federer.

Roddick made three Wimbledon finals, losing to Federer each time, including a 2009 five-set thriller in which the final set lasted 30 games.