American Mardy Fish and Frenchman Gael Monfils have pulled out of this week's Davis Cup quarterfinal between the United States and host France.

The world No. 9 Fish cited extreme fatigue for his decision, while the oft- injured Monfils is slowed by an abdominal injury.

A statement from the United States Tennis Association said Fish was seen by doctors in Miami after he played there last week and he was told he needs to rest for at least two or three days.

Teenager Ryan Harrison will replace Fish on the U.S. squad, while the 14th- ranked Monfils' replacement has not been named yet.

The best-of-five tie will begin Friday on the red clay at the famed Monte Carlo Country Club.

Captain Jim Courier's American team will also feature John Isner and Bob Bryan and Mike Bryan, the twin brothers who comprise the No. 1 doubles team in the world, while team France will be led by world No. 6 Jo-Wilfried Tsonga and include Julien Benneteau and Michael Llodra.

The French are captained by long-time mentor Guy Forget.

The 32-time champion U.S. is 8-7 all-time versus the nine-time winner France, as the two storied Davis Cup nations first met back in 1905. The Americans last won the title in 2007, while the French last hoisted the chalice in 2001.

In their last meeting, the U.S. topped France 4-1 in a 2008 quarterfinal.

Team USA stunned a Roger Federer-led host Swiss squad 5-0 in Fribourg in March. The 6-foot-9 Isner shocked Federer in four sets in the second opening singles rubber.

The United States-France winner will advance to the semifinals to face either reigning champion Spain or Austria.