22 was his number
Deion Sanders wore the number 21 for the Dallas Cowboys.
The most famous player to wear the number 12 for the dallas cowboys was Roger Staubach
Defensive back Barry Church wears the number for the 2011 Dallas Cowboys.
Deion Sanders wore No. 21 for the Dallas Cowboys from 1995 to 1999.
Ed "Too Tall" Jones probably was the most famous Dallas Cowboys player to wear the number.
The Cowboys do not officially retire numbers, choosing to pay tribute to great players through induction in the Ring of Honor. But it is safe to say that no one will wear Smith's No. 22 for Dallas anytime soon.
Ozzie Smith wore number 1 with the Cardinals and it was retired.