Citing flu-like symptoms, Andy Roddick has pulled out of the the 2011 Delray Beach International Championships.

Roddick held a press conference this afternoon where he expressed his disappointment at having to pull out of the event given that he has not played the tournament since 2003. On his condition, Roddick stated that ” I woke up yesterday and felt like I got hit by a bus”. Tuesday’s night session will now feature Juan Martin Del Potro taking on Richard Berankis.

Here is the official press release from ITC tournament following Roddick’s press conference :

Delray Beach, FL – Top seed Andy Roddick has pulled out of the Delray Beach International Championships because of illness.

Roddick said during a press conference late Monday afternoon that he began experiencing flu-like symptoms prior to his Memphis final and has been prescribed antibiotics.

“I’m very disappointed. I’ve waited too long to come back and play this tournament,” said Roddick, who is a former resident of nearby Boca Raton where he played in high school. “It’s just unfortunate timing. I was looking forward to coming back. I honestly don’t feel I can go out there and give my best.”

Roddick won his 30th ATP World Tour title Sunday when he defeated Canadian Milos Raonic in three sets at the Regions Morgan Keegan Championships in Memphis, joining Roger Federer and Rafael Nadal as the only active tennis players to win at least 30 ATP titles. Roddick, ranked No. 8 in world, notched the victory with a remarkable diving forehand shot down the line on match point.

Roddick’s spot atop the bracket has been filled by qualifier Marinko Matosevic.

Tournament director Mark Baron announced that Tuesday’s evening session would begin at 5:30 pm with a Ashley Fisher/Stephen Huss vs. Jack Sock/Donald Young doubles match, followed by a 7:15 pm Juan Martin del Potro vs Richard Berankis ATP World Tour first round match, followed by the ATP Champions Tour Final.