To air live on local television, league rules require games to be sold out 72 hour before kickoff. This is the fourth time this season the NFL has granted the Cardinals an extension.
As of Thursday afternoon, the Cardinals say they have about 800 tickets remaining to sell before Friday's new deadline of 2:15 p.m. local time.
The Cardinals have sold out all 38 games played at University of Phoenix Stadium, which opened in 2006.
Copyright 2009 by The Associated Press