Article Photos: QB Matt Cassel hurt as Chiefs lose to Ravens, 9-6

Baltimore Ravens linebacker Brendon Ayanbadejo (51) tackles Kansas City Chiefs defensive back Javier Arenas (21) during the first half of an NFL football game at Arrowhead Stadium in Kansas City, Mo., Sunday, Oct. 7, 2012. (AP Photo/Colin E. Braley)

Baltimore Ravens linebacker Brendon Ayanbadejo (51) tackles Kansas City Chiefs defensive back Javier Arenas (21) during the first half of an NFL football game at Arrowhead Stadium in Kansas City, Mo., Sunday, Oct. 7, 2012. (AP Photo/Colin E. Braley)