What position did Bernie Williams primarily play?

What uniform number did CC Sabathia wear with the Yankees? What position did Andy Pettitte primarily play? Andy Pettitte is best known for playing with which MLB team? What uniform number did Andy Pettitte wear with the Yankees? Bernie Williams is best known for playing with which MLB team? What uniform number did Bernie Williams wear with the Yankees? What position did Jorge Posada primarily play? Jorge Posada is best known for playing with which MLB team?