What uniform number did Mariano Rivera wear with the Yankees?

Roger Maris is best known for playing with which MLB team? What uniform number did Roger Maris wear with the Yankees? What uniform number did Derek Jeter wear with the Yankees? What position did Mariano Rivera primarily play? What position did Whitey Ford primarily play? Whitey Ford is best known for playing with which MLB team? What uniform number did Whitey Ford wear with the Yankees? Which player was nicknamed "The Chairman of the Board"?