What position did Jason Witten primarily play?

What jersey number did Shannon Sharpe wear with the Broncos? What position did Antonio Gates primarily play? Antonio Gates is best known for playing with which NFL team? What jersey number did Antonio Gates wear with the Chargers? Jason Witten is best known for playing with which NFL team? Which college was Jason Witten playing for when he entered the NFL? What jersey number did Jason Witten wear with the Cowboys? What position did Mike Ditka primarily play?