Carolina Panthers tight end Greg Olsen (88) is hit by Tampa Bay Buccaneers defensive back Mark Barron (24) during a game, Sept. 9, 2012, in Tampa, Fla. (AP Photo/Brian Blanco)

Buffalo Bills quarterback Ryan Fitzpatrick is hit by New York Jets linebacker Calvin Pace during the first half at MetLife Stadium, Sept. 9, 2012, in East Rutherford, N.J. (AP Photo/Bill Kostroun)

Miami Dolphins running back Daniel Thomas (33) fumbles the ball as he is hit by Houston Texans strong safety Glover Quin (29) in the second quarter, Sept. 9, 2012, in Houston. The Texans recovered the fumble. (AP Photo/Dave Einsel)

Washington Redskins quarterback Robert Griffin III (10) is hit by New Orleans Saints free safety Malcolm Jenkins (27) after after releasing the ball on touchdown pass in the first quarter at the Mercedes-Benz Superdome in New Orleans, Sept. 9, 2012. (AP Photo/Bill Haber)

Buffalo Bills running back Fred Jackson is hit by New York Jets defensive back LaRon Landry during the first half at MetLife Stadium, Sept. 9, 2012, in East Rutherford, N.J. Jackson was injured on the play. (AP Photo/Mel Evans)

Tennessee Titans quarterback Jake Locker (10) loses the ball as he is hit by New England Patriots defensive end Chandler Jones (95) in the second quarter, Sept. 9, 2012, in Nashville, Tenn. New England Patriots linebacker Dont'a Hightower recovered the ball and ran for a touchdown. (AP Photo/Wade Payne)

New York Jets quarterback Mark Sanchez fumbles the ball after being hit by Buffalo Bills defensive end Chris Kelsay during the first half at MetLife Stadium, Sept. 9, 2012, in East Rutherford, N.J. (AP Photo/Bill Kostroun)

Oakland Raiders quarterback Carson Palmer (3) is sacked by San Diego Chargers linebacker Shaun Phillips (95) as linebacker Antwan Barnes (98) follows the play during the fourth quarter in Oakland, Calif., Sept. 10, 2012. The Chargers won 22-14. (AP Photo/Tony Avelar)

Minnesota Vikings defensive tackle Letroy Guion (98) gets penalized for a late hit on Jacksonville Jaguars quarterback Blaine Gabbert (11) during the second half, Sept. 9, 2012, in Minneapolis. (AP Photo/Genevieve Ross)

Pittsburgh Steelers wide receiver Emmanuel Sanders (88) is hit with a head to head shot by Denver Broncos free safety Rahim Moore (26) during the third quarter, Sept. 9, 2012 in Denver. (AP Photo/Joe Mahoney)