New York Yankee's outfielder Hideki Matsui heads to first on a lead-off walk by Boston Red Sox's relief pitcher Keith Foulke during the ninth inning of the sixth game of the American League championship series at Yankee Stadium on October 19, 2004 in New York City. (UPI Photo/Monika Graff)
BOSTON, Oct. 7 (UPI) -- Relief pitcher Keith Foulke of the Boston Red Sox underwent arthroscopic surgery on his right knee Thursday. Foulke, who is already out for the remainder of the playoffs, last pitched Sept. 18 against Oakland.