Linebacker Bruce Carter has worn the number since he joined the Dallas Cowboys in 2011.
Chuck Howley and Randy White.
It was the same number he had worn at the University of Georgia -- 34.
No. 31 is worn by cornerback Mario Butler, a member of the Dallas Cowboys' 2011 practice squad.
The most famous player to wear the number 12 for the dallas cowboys was Roger Staubach
Jason Witten has always worn the No. 82 as a member of the Dallas Cowboys.