What position did Steve Young primarily play?

What position did Troy Aikman primarily play? Troy Aikman is best known for playing with which NFL team? Which college was Troy Aikman playing for when he entered the NFL? What jersey number did Troy Aikman wear with the Cowboys? Steve Young is best known for playing with which NFL team? Which college was Steve Young playing for when he entered the NFL? What jersey number did Steve Young wear with the 49ers? What position did Jim Kelly primarily play?