On April 15, 1997, Robinson's #42 was retired by Major League Baseball, which means that no future player on any major league team can wear it. The number was retired in ceremonies at Shea Stadium to mark the 50th anniversary of Robinson's first game with the Dodgers. A handful of players who wore #42 as a salute to Robinson, such as the Mets' Butch Huskey and Boston's Mo Vaughn, were allowed to continue to use the number. The Yankees' Mariano Rivera is be the last player in the major leagues to wear #42 on a regular basis.