This prime-time game has major postseason implications: The Philadelphia Eagles (9-6) and Dallas Cowboys (8-7) are battling for the NFC East crown in a win-or-walk game, with the season on the line. Both teams are starting backup quarterbacks, but with a decided edge to Philly. On the Dallas side, Tony Romo is missing the game and undergoing back surgery, giving backup QB Kyle Orton his first NFL start since the 2011 season finale. Meanwhile, on the Eagles’ side, backup QB Nick Foles has not only been playing for a while this season, he’s been playing brilliantly, amassing the highest QB rating in the league.