WIMBLEDON, England (AP) -- The U.S. Tennis Association says Wimbledon runner-up Andy Roddick is pulling out of a Davis Cup quarterfinal at Croatia because of a hip flexor injury.

The USTA says Monday that Roddick hurt his right hip during his loss to Roger Federer at the All England Club, a match that ended 16-14 in the longest fifth set in Grand Slam final history.

Roddick slipped and tumbled to the grass in the eighth game of the fourth set.

He is being replaced on the U.S. Davis Cup team by Mardy Fish.

Roddick had played in 18 consecutive Davis Cup matches for the United States.

Croatia hosts the U.S. on clay at Porec, Croatia, starting Friday.

Courtesy: Associated Press