Article Photos: OU football: Defense is ready to quiet critics 1/1

Texas A&M's Johnny Manziel (2) runs past Oklahoma's Gabe Lynn (9) during the college football Cotton Bowl game between the University of Oklahoma Sooners (OU) and Texas A&M University Aggies (TXAM) at Cowboys Stadium on Friday Jan. 4, 2013, in Arlington, Tx. Photo by Chris Landsberger, The Oklahoman