Dallas Cowboys quarterback Tony Romo passes the ball before an NFL football game against the Pittsburgh Steelers, Sunday, Dec. 16, 2012, in Arlington, Texas. (AP Photo/LM Otero)

Dallas Cowboys wide receiver Dez Bryant passes the ball before an NFL football game against the Pittsburgh Steelers Sunday, Dec. 16, 2012 in Arlington, Texas. Bryant sustained an injury to his finger during last week's game against Cincinnati. (AP Photo/LM Otero)

Pittsburgh Steelers quarterback Ben Roethlisberger (7) warms up before an NFL football game against the Dallas Cowboys, Sunday, Dec. 16, 2012, in Arlington, Texas. (AP Photo/LM Otero)

Pittsburgh Steelers quarterback Ben Roethlisberger (7) passes the ball before an NFL football game against the Dallas Cowboys, Sunday, Dec. 16, 2012, in Arlington, Texas. (AP Photo/Tony Gutierrez)

Flags are flown hat half staff in front of Cowboys Stadium for the victims of the Sandy Hook Elementary School shootings before an NFL football game Sunday, Dec. 16, 2012 in Arlington, Texas. (AP Photo/Tony Gutierrez)

A Pittsburgh Steelers fan waves his terrible towel before an NFL football game against the Dallas Cowboys Sunday, Dec. 16, 2012 in Arlington, Texas. (AP Photo/LM Otero)

Dallas Cowboys quarterback Tony Romo (9) takes the field before an NFL football game against the Pittsburgh Steelers Sunday, Dec. 16, 2012 in Arlington, Texas. (AP Photo/Tony Gutierrez)

Fans hold up a sign of support during a moment of silence for the victims of the Sandy Hook Elementary School shootings and Cowboys player Jerry Brown, Jr, who died last week in a car crash and teammate Josh Brent was the driver before an NFL football game Sunday, Dec. 16, 2012 in Arlington, Texas. (AP Photo/LM Otero)

Pittsburgh Steelers quarterback Ben Roethlisberger (7) passes the ball as Dallas Cowboys outside linebacker Anthony Spencer (93) defends during the first half of an NFL football game Sunday, Dec. 16, 2012 in Arlington, Texas. (AP Photo/LM Otero)

Pittsburgh Steelers defensive back DeMarcus Van Dyke (30) pauses during a moment of silence for the victims of the Sandy Hook Elementary School shootings and for Dallas Cowboys linebacker Jerry Brown Jr., who died last week in a car crash, before an NFL football game, Sunday, Dec. 16, 2012, in Arlington, Texas. (AP Photo/LM Otero)

Dallas Cowboys free safety Gerald Sensabaugh,left, and strong safety Eric Frampton (27) knock the ball out of Pittsburgh Steelers wide receiver Emmanuel Sanders' (88) hands during the first half of an NFL football game Sunday, Dec. 16, 2012 in Arlington, Texas. (AP Photo/LM Otero)

Dallas Cowboys quarterback Tony Romo (9) passes the ball against the Pittsburgh Steelers during the first half of an NFL football game Sunday, Dec. 16, 2012 in Arlington, Texas. (AP Photo/Tony Gutierrez)

Dallas Cowboys suspended player Josh Brent walks the sidelines during the first half of an NFL football game against the Pittsburgh Steelers Sunday, Dec. 16, 2012 in Arlington, Texas. Brent was the driver last week in a car crash that killed teammate Jerry Brown, Jr.(AP Photo/LM Otero)

Dallas Cowboys suspended player Josh Brent, right, is greeted by DeMarco Murray (29) on the sideline during the first half of an NFL football game against the Pittsburgh Steelers Sunday, Dec. 16, 2012 in Arlington, Texas. Brent was the driver in a car crash last week, that killed teammate Jerry Brown, Jr.(AP Photo/LM Otero)

As Dallas Cowboys punter Brian Moorman (2) holds, kicker Dan Bailey (5) makes a field goal against the Pittsburgh Steelers during the first half of an NFL football game Sunday, Dec. 16, 2012 in Arlington, Texas. (AP Photo/LM Otero)

A jersey with Jerry Brown, Jr.'s number is displayed on the Dallas Cowboys sideline during the first half of an NFL football game against the Pittsburgh Steelers Sunday, Dec. 16, 2012 in Arlington, Texas. Brown died in a car crash last week and teammate Josh Brent was the driver. (AP Photo/Tony Gutierrez)

Dallas Cowboys tight end Jason Witten (82) scores a touchdown against the Pittsburgh Steelers during the first half of an NFL football game Sunday, Dec. 16, 2012 in Arlington, Texas. (AP Photo/LM Otero)

Dallas Cowboys tight end Jason Witten (82) makes a touchdown reception against the Pittsburgh Steelers during the first half of an NFL football game Sunday, Dec. 16, 2012 in Arlington, Texas.(AP Photo/Tony Gutierrez)

Dallas Cowboys head coach Jason Garrett gestures during the first half of an NFL football game against the Pittsburgh Steelers Sunday, Dec. 16, 2012 in Arlington, Texas. (AP Photo/Tony Gutierrez)

Pittsburgh Steelers quarterback Ben Roethlisberger (7) celebrates a touchdown against the Dallas Cowboys during the first half of an NFL football game Sunday, Dec. 16, 2012 in Arlington, Texas. (AP Photo/LM Otero)

Pittsburgh Steelers tight end Heath Miller (83) runs in a touchdown as Dallas Cowboys outside linebacker Anthony Spencer (93) defends during the first half of an NFL football game Sunday, Dec. 16, 2012 in Arlington, Texas. (AP Photo/Tony Gutierrez)

Pittsburgh Steelers tight end Heath Miller (83) celebrates his touchdown against the Dallas Cowboys with guard David DeCastro (66) and tackle Kelvin Beachum (68) during the first half of an NFL football game Sunday, Dec. 16, 2012 in Arlington, Texas. (AP Photo/Tony Gutierrez)

Pittsburgh Steelers quarterback Ben Roethlisberger (7) celebrates a touchdown against the Dallas Cowboys with center Maurkice Pouncey (53) and tackle Max Starks (78) during the first half of an NFL football game Sunday, Dec. 16, 2012 in Arlington, Texas. (AP Photo/LM Otero)

Dallas Cowboys suspended player Josh Brent watches action on the sideline against the Pittsburgh Steelers during the first half of an NFL football game a Sunday, Dec. 16, 2012 in Arlington, Texas. Brent was the driver last week in a car crash that killed teammate Jerry Brown, Jr (AP Photo/Tony Gutierrez)

Dallas Cowboys wide receiver Dez Bryant (88) celebrates his touchdown against the Pittsburgh Steelers with Dallas Cowboys head coach Jason Garrett during the second half of an NFL football game Sunday, Dec. 16, 2012 in Arlington, Texas. (AP Photo/Tony Gutierrez)

Dallas Cowboys wide receiver Dez Bryant (88) celebrates his touchdown against the Pittsburgh Steelers with Lawrence Vickers (47) during the second half of an NFL football game Sunday, Dec. 16, 2012 in Arlington, Texas. (AP Photo/Tony Gutierrez)

Pittsburgh Steelers wide receiver Mike Wallace (17) makes a 60-yard reception against the Dallas Cowboys during the second half of an NFL football game Sunday, Dec. 16, 2012 in Arlington, Texas. (AP Photo/LM Otero)

Pittsburgh Steelers quarterback Ben Roethlisberger (7) celebrates a touchdown against the Dallas Cowboys during the second half of an NFL football game Sunday, Dec. 16, 2012 in Arlington, Texas. (AP Photo/LM Otero)

Pittsburgh Steelers wide receiver Antonio Brown (84) scores a touchdown as Dallas Cowboys cornerback Mike Jenkins (21) defends during the second half of an NFL football game Sunday, Dec. 16, 2012 in Arlington, Texas. (AP Photo/LM Otero)

Pittsburgh Steelers wide receiver Antonio Brown (84) celebrates his touchdown against the Dallas Cowboys during the second half of an NFL football game Sunday, Dec. 16, 2012 in Arlington, Texas. (AP Photo/LM Otero)

Pittsburgh Steelers wide receiver Antonio Brown (84) celebrates his touchdown against the Dallas Cowboys during the second half of an NFL football game, Sunday, Dec. 16, 2012, in Arlington, Texas. (AP Photo/LM Otero)

Pittsburgh Steelers wide receiver Jerricho Cotchery (89) and quarterback Ben Roethlisberger celebrate a touchdown against the Dallas Cowboys during the second half of an NFL football game Sunday, Dec. 16, 2012 in Arlington, Texas. (AP Photo/LM Otero)

Dallas Cowboys tackle Tyron Smith wears a decal with the number 53 on his helmet to commemorate teammate Jerry Brown, Jr. during the second half of an NFL football game against the Pittsburgh Steelers Sunday, Dec. 16, 2012 in Arlington, Texas. Brown died in a car crash last week and teammate Josh Brent was the driver. (AP Photo/Tony Gutierrez)

Dallas Cowboys running back DeMarco Murray (29) celebrates his touchdown against the Pittsburgh Steelers with Dez Bryant (88) during the second half of an NFL football game Sunday, Dec. 16, 2012 in Arlington, Texas. (AP Photo/Tony Gutierrez)

Pittsburgh Steelers head coach Mike Tomlin walks the sideline during the second half of an NFL football game against the Dallas Cowboys Sunday, Dec. 16, 2012 in Arlington, Texas. (AP Photo/LM Otero)

Dallas Cowboys wide receiver Dwayne Harris (17) makes a reception against the Pittsburgh Steelers during the second half of an NFL football game Sunday, Dec. 16, 2012 in Arlington, Texas. (AP Photo/LM Otero)

Dallas Cowboys running back DeMarco Murray (29) goes over the top for yardage against the Pittsburgh Steelers during the second half of an NFL football game Sunday, Dec. 16, 2012 in Arlington, Texas. (AP Photo/LM Otero)

Dallas Cowboys defensive end Marcus Spears (96) sacks Pittsburgh Steelers quarterback Ben Roethlisberger (7) during the second half of an NFL football game Sunday, Dec. 16, 2012 in Arlington, Texas. (AP Photo/LM Otero)

Pittsburgh Steelers quarterback Ben Roethlisberger (7) recovers after being sacked by Dallas Cowboys defensive end Marcus Spears during the second half of an NFL football game Sunday, Dec. 16, 2012 in Arlington, Texas. (AP Photo/LM Otero)

Dallas Cowboys punter Brian Moorman (2) and John Phillips (89) celebrate after kicker Dan Bailey (5) kicked a field goal to beat the Pittsburgh Steelers 27-24 in overtime of an NFL football game Sunday, Dec. 16, 2012 in Arlington, Texas. Pittsburgh Steelers' Josh Victorian (35) leaves the field. (AP Photo/LM Otero)

Dallas Cowboys linebacker Brady Poppinga (98) congratulates Brandon Carr (39) for Carr's overtime interception against the Pittsburgh Steelers during an NFL football game Sunday, Dec. 16, 2012 in Arlington, Texas. Dallas won 27-24. (AP Photo/Tony Gutierrez)

Dallas Cowboys cornerback Mike Jenkins (21) celebrates in the final moments during overtime of an NFL football game against the Pittsburgh Steelers Sunday, Dec. 16, 2012 in Arlington, Texas. The Cowboys won 27-24. (AP Photo/Tony Gutierrez)

Dallas Cowboys tight end Jason Witten (82) congratulates Brandon Carr (39) for Carr's interception against the Pittsburgh Steelers during overtime of an NFL football game, Sunday, Dec. 16, 2012 in Arlington, Texas. Dallas won 27-24. (AP Photo/Tony Gutierrez)

Dallas Cowboys cornerback Brandon Carr (39) celebrates after the Cowboys beat the Pittsburgh Steelers 27-24 in overtime of an NFL football game Sunday, Dec. 16, 2012 in Arlington, Texas. Carr intercepted the ball in overtime to set up the winning field goal. (AP Photo/LM Otero)

Dallas Cowboys defensive end Marcus Spears (96) sacks Pittsburgh Steelers quarterback Ben Roethlisberger (7) during the second half of an NFL football game Sunday, Dec. 16, 2012 in Arlington, Texas. (AP Photo/LM Otero)

Dallas Cowboys defensive end Jason Hatcher (97), celebrates with defensive end Marcus Spears (96) after Spears sacked Pittsburgh Steelers quarterback Ben Roethlisberger during the second half of an NFL football game Sunday, Dec. 16, 2012 in Arlington, Texas. Dallas won 27-24 in overtime. (AP Photo/LM Otero)

United States Senator Rick Santorum watches action between the Dallas Cowboys and the Pittsburgh Steelers during the second half of an NFL football game Sunday, Dec. 16, 2012 in Arlington, Texas. (AP Photo/Tony Gutierrez)