What uniform number did Carl Yastrzemski wear with the Red Sox?

What position did Ted Williams primarily play? What uniform number did Ted Williams wear with the Red Sox? What position did Carl Yastrzemski primarily play? Carl Yastrzemski is best known for playing with which MLB team? What position did David Ortiz primarily play? David Ortiz is best known for playing with which MLB team? What uniform number did David Ortiz wear with the Red Sox? What position did Pedro Martínez primarily play?