What position did Tony Romo primarily play?

What position did Dak Prescott primarily play? Dak Prescott is best known for playing with which NFL team? Which college was Dak Prescott playing for when he entered the NFL? What jersey number did Dak Prescott wear with the Cowboys? Tony Romo is best known for playing with which NFL team? Which college was Tony Romo playing for when he entered the NFL? What jersey number did Tony Romo wear with the Cowboys? What position did Donovan McNabb primarily play?