What position did Champ Bailey primarily play?

What position did Brian Urlacher primarily play? Brian Urlacher is best known for playing with which NFL team? Which college was Brian Urlacher playing for when he entered the NFL? What jersey number did Brian Urlacher wear with the Bears? Champ Bailey is best known for playing with which NFL team? Which college was Champ Bailey playing for when he entered the NFL? What jersey number did Champ Bailey wear with the Broncos? What position did Darrelle Revis primarily play?