WIMBLEDON, England — Wimbledon runner-up Andy Roddick withdrew yesterday from the U.S. Davis Cup team’s quarterfinal at Croatia, citing a right hip flexor injury.

The U.S. Tennis Association announced that Roddick would not participate in this week’s Davis Cup matches because he was hurt during his loss Sunday to Roger Federer at the All England Club — a match that finished 16-14 in the longest fifth set in Grand Slam final history.

Roddick will being replaced on the U.S. Davis Cup team by Mardy Fish, who reached the third round at Wimbledon. Roddick is ranked No. 6, while Fish is No. 23.