Giants wide receiver Domenik Hixon reacts after picking up a first down against the Redskins, Oct. 21, 2012, in East Rutherford, N.J. (AP Photo/Bill Kostroun)

Seahawks wide receiver Golden Tate (81) celebrates after making the first down against the Lions, Oct. 28, 2012. in Detroit. (AP Photo/Duane Burleson)

Chargers wide receiver Danario Alexander reacts after picking up a first down against the Chiefs, Nov. 1, 2012, in San Diego. (AP Photo/Gregory Bull)

Packers tight end Jermichael Finley celebrates a first down against the Jaguars, Oct. 28, 2012, in Green Bay, Wis. (AP Photo/Matt Ludtke)

Redskins quarterback Robert Griffin III dives for the first down marker and gets the first down during a preseason game against the Colts, Aug. 25, 2012, in Landover, Md. (AP Photo/Richard Lipski)

Official Ed Hochuli signals a first down during the first half of a game between the Jaguars and the Bengals, Sept. 30, 2012, in Jacksonville, Fla. (AP Photo/John Raoux)

Panthers' Cam Newton (1) reacts after a first down against the Buccaneers in Charlotte, N.C., Nov. 18, 2012. (AP Photo/Bob Leverone)

NFL officials measure for first down after Pittsburgh challenged the placement of the ball in the fourth quarter against the Ravens in Pittsburgh, Nov. 18, 2012. The Steelers got a first down on the challenge. (AP Photo/Gene J. Puskar)

An official indicates a first first down between the Texans and the Titans, Sept. 30, 2012, in Houston. (AP Photo/Eric Gay)

Chiefs wide receiver Dexter McCluster, right, keeps his feet in for a catch and a first down out of the reach of Chargers cornerback Marcus Gilchrist, Nov. 1, 2012, in San Diego. (AP Photo/Gregory Bull)