Currently, no Dallas Cowboys player wears the #33.
I think it unlikely that any one would try to wear 33, as it belonged to Hall of Famer Tony Dorsett. While the Cowboys do not retire numbers, I don't think you will see a 12,8,33, or 74. 88 lingers on, however.
No. 31 is worn by cornerback Mario Butler, a member of the Dallas Cowboys' 2011 practice squad.
No one on the 2011 Dallas Cowboys rosters wears No. 71.
Wide receiver Miles Austin wears No. 19 for the Cowboys.
Safety Roy Williams wore No. 31 during the 2006 season.
Safety George Teague wore #31 between 1998-2001. Williams came to the Cowboys in 2002.
Doug Free is number 68 on the Dallas Cowboys.
The Cowboys tied the NY Giants 31-31.
Barry Church is number 42 on the Dallas Cowboys.
Joseph Randle is number 21 on the Dallas Cowboys.
Lance Dunbar is number 25 on the Dallas Cowboys.
Mackenzy Bernadeau is number 73 on the Dallas Cowboys.
Martez Wilson is number 56 on the Dallas Cowboys.
Matt Johnson is number 37 on the Dallas Cowboys.
Morris Claiborne is number 24 on the Dallas Cowboys.
Nick Hayden is number 96 on the Dallas Cowboys.