Chiefs running back Jamaal Charles (25) fumbles while being tackled by Ravens strong safety Bernard Pollard (31) and linebacker Courtney Upshaw (91) at Arrowhead Stadium in Kansas City, Mo., Oct. 7, 2012. (AP Photo/Colin E. Braley)

Panthers' DeAngelo Williams (34) fumbles the ball as Seahawks' Brandon Browner (39) defends a game in Charlotte, N.C., Oct. 7, 2012. Seattle recovered the ball. (AP Photo/Bob Leverone)

Bills tight end Scott Chandler, left, fumbles the ball as he is tackled by 49ers linebacker Patrick Willis, Oct. 7, 2012. San Francisco safety Dashon Goldson recovered the ball. (AP Photo/Ben Margot)

Steelers quarterback Ben Roethlisberger fumbles as he is sacked by Titans defensive tackle Mike Martin (93) and another Titan, Oct. 11, 2012, in Nashville, Tenn. (AP Photo/Joe Howell)

Dolphins quarterback Ryan Tannehill (17) fumbles the football after being sacked by Cardinals inside linebacker Daryl Washington (58), Sept. 30, 2012, in Glendale, Ariz. (AP Photo/Matt York)

Titans running back Chris Johnson fumbles the ball in front of Vikings linebacker Erin Henderson (50) during a game, Oct. 7, 2012, in Minneapolis. (AP Photo/Jim Mone)

49ers quarterback Colin Kaepernick (7) fumbles as he is tackled by Bills outside linebacker Nick Barnett (50), Oct. 7, 2012. (AP Photo/Tony Avelar)

Eagles quarterback Michael Vick (7) fumbles the ball into the end zone after being hit by Steelers free safety Ryan Clark (25) in Pittsburgh, Oct. 7, 2012. The Steelers recovered the ball. (AP Photo/Gene J. Puskar)

Jets quarterback Mark Sanchez fumbles the ball and then recovers it during overtime of a game against the Dolphins, Sept. 23, 2012, in Miami. The Jets won 23-20 in overtime. (AP Photo/Wilfredo Lee)

Falcons defensive tackle Jonathan Babineaux (95) hits Raiders running back Darren McFadden (20) as McFadden fumbles the ball, Oct. 14, 2012, in Atlanta. (AP Photo/Billy Weeks)

Chargers tight end Randy McMichael (81) fumbles the football during a game against the Broncos, Oct. 15, 2012 in San Diego. (AP Photo/Denis Poroy)

Seahawks' Alan Branch (99) reaches for the ball after Panthers' Cam Newton (1) fumbles during the fourth quarter of a game in Charlotte, N.C., Oct. 7, 2012. The Seahawks recovered the ball and won 16-12. (AP Photo/Bob Leverone)