** EDS. NOTE: GRAPHIC CONTENT ** FILE ** In this Aug. 23, 2008 file photo, Cincinnati Bengals quarterback Carson Palmer walks off the field bleeding after breaking his nose in an NFL football game against the New Orleans Saints in Cincinnati. The NFL kicks off in earnest with its two best quarterbacks, Tom Brady and Peyton Manning, not having played a single down in the preseason and two rising stars at the position, Carson Palmer and Derek Anderson, recovering from a broken nose and a concussion. (AP Photo/David Kohl, File)