In what could be his final appearance as a pro — or perhaps a momentous upset in men's singles — Andy Roddick of the United States resumes play against No. 7 Juan Martin del Potro of Argentina in the completion of their fourth-round match at the U.S. Open on Wednesday.

Roddick led 1-0 in a first-set tiebreaker when rain suspended play Tuesday night.

Roddick turned 30 last Thursday and promptly announced that he planned to retire as an active player on the ATP Tour following the U.S. Open at Flushing Meadows, N.Y., where he won the lone major tournament of his professional career in 2003.

Del Potro won the tournament in 2009.

Roddick, seeded 20th, once ranked as high as No. 1 in the world. But a spate of injuries the past few seasons saw him tumble to 34th in March, his lowest ranking since 2001. 

An injured right hamstring suffered earlier this season forced him out of the Australian Open in the second round and he later lost in the first and third rounds of the French Open and Wimbledon, respectively. 



On announcing retirement

"If I do run into some emotions [at the U.S. Open], I don't want people to think I'm a little unstable — or more unstable [laughs] — so that is why I came to this decision."

On timing of retirement

"I don't know that I want to disrespect the game by coasting home. I had plans to play a smaller schedule next year. But the more I thought about it, I think you've either got to be all in or not. That's more, kind of, the way I've chosen to do things."

On reason for retirement

"With the way my body feels, with the way that I'm able to feel like I'm able to compete now, I don't know that it's good enough. I don't know that I've ever been someone who is interested in 'existing' on tour. I have a lot of interests and a lot of other things that excite me. I'm looking forward to those."



Born: August 30, 1982

Resides: Austin, Texas

Career record: 611—212

Career titles: 32

Record in finals: 32-20

Grand Slam titles: 1

Record in Grand Slam finals: 1-4

Career prize money: $20,540,390

-Reached world's No. 1 ranking on Nov. 3, 2003

-Defeated Juan Carlos Ferrero in 2003 U.S. Open final

-Lost to Roger Federer in 4 Grand Slam finals: Wimbledon (2004, 2005, 2009) and U.S. Open (2006) 

With files from The Associated Press