The Yankees will retire former manager Joe Torre's No. 6, leaving Derek Jeter's No. 2 as the last single digit in New York's pinstripes.
The team also said Thursday that Torre, Rich Gossage, Tino Martinez and Paul O'Neill will be honored with plaques in Monument Park.
Torre managed the Yankees to World Series titles in 1996 and from 1998 to 2000 and six AL pennants during 12 seasons as manager that ended in 2007. Currently, Major League Baseball's executive vice president for baseball operations, he is being inducted into baseball's Hall of Fame this summer.
Torre's number will be retired during a ceremony in Monument Park on Aug. 23.
Jeter, the Yankees' captain since 2003, said in February this will be his final season.