Here's a key matchup to watch in Sunday's Vikings-Cardinals game.
Vikings DE Jared Allen vs. Cardinals OLT Levi Brown
Brown and the rest of the Cardinals' offensive line struggled to protect Kevin Kolb last week, allowing four sacks. That caused Kolb to be jittery in the pocket, even when the pressure wasn't getting there, causing inaccurate back-foot throws.
Things don't get any easier this week as Jared Allen and his 6.5 sacks (second in the league) line up across from the struggling offensive line. Allen and the Vikings' defensive line didn't get consistent pressure against Matt Cassel and the Chiefs last week, as there were multiple instances where Cassel had plenty of time to survey the defense and make plays. However, Allen was able to record two sacks based on his hustle to chase down bootlegs from the backside.
Brown has been a disappointment since he was selected with the fifth pick in the 2007 draft and struggled mightily against the ferocious Giants pass rush last week. He had particular difficulty with the speed rush, which is Allen's strength.