Ravens seek turnaround; Vikings seek validation

Two weeks ago, the Ravens were undefeated, just like the Vikings. Since then, however, the Ravens have suffered back-to-back losses, and their defense suddenly looks vulnerable against the pass. Can Baltimore turn things around Sunday in Minnesota? A quick take on some issues that will help determine the winner of the Ravens-Vikings clash: 1. Can the Ravens contain Adrian Peterson? It will be a treat watching Peterson run against a Ravens' defense that prides itself on stopping the run. Last weekend, Cedric Benson of the Bengals rushed for 120 yards against the Ravens, ending a streak of 39 consecutive games in which no back had broken the 100-yard barrier against Baltimore. After watching Peterson many times from afar, Ravens linebacker Ray Lewis was eager to face Peterson for the first time. "He plays the game the way it should be played," Lewis said of Peterson. "The way he plays football, he makes you appreciate the game." The Vikings have won the past...