Vikings likely to face Cards' John Skelton

On paper, at least, the Arizona Cardinals' quarterback shift sounds favorable for the Minnesota Vikings. Backup John Skelton is expected to start Sunday at the Metrodome, providing the Vikings with a stronger-armed but far less mobile adversary than the injured Kevin Kolb.

The Cardinals have allowed an NFL-high 28 sacks, including 23 in their past three games alone, and Kolb was injured last Sunday while running for his life in a loss to the Buffalo Bills. The Vikings' two losses this season have each come against teams whose quarterbacks broke the pocket against them.

Indianapolis Colts rookie Andrew Luck gained 21 key yards on four scrambles and avoided several near-sacks in Week 2. Meanwhile, Washington Redskins rookie Robert Griffin III scrambled for a game-clinching 76-yard touchdown and a total of 138 yards last Sunday at FedEx Stadium.