What position did Joe Theismann primarily play?

What position did Doug Williams primarily play? Doug Williams is best known for playing with which NFL team? Which college was Doug Williams playing for when he entered the NFL? What jersey number did Doug Williams wear with the Redskins? Joe Theismann is best known for playing with which NFL team? Which college was Joe Theismann playing for when he entered the NFL? What jersey number did Joe Theismann wear with the Redskins? What position did Boomer Esiason primarily play?