Mariano Rivera - P - New York Yankees

Mariano Rivera, of the New York Yankees, is the last major leaguer who sports The Number on a daily basis. When MLB retired The Number across the league in 1997 players who were at the time wearing The Number were allowed to continue wearing The Number. Rivera is the last left.

Here is he shown warming up before the 2006 MLB All-Star game at PNC Park in Pittsburgh, Pennsylvania.