Romo undergoes back surgery

Tony Romo’s season is over, and the Dallas Cowboys will have to win without their star quarterback in a third straight playoffs-or-bust finale.

Coach Jason Garrett said Romo had back surgery Friday, and Kyle Orton will start when Dallas faces Philadelphia on Sunday night with the NFC East title and a postseason berth on the line.

Garrett said Romo underwent treatment all week in hopes of playing after injuring his back in a season-saving 24-23 victory against Washington. The winning touchdown came after the injury on Romo’s fourth-down pass to DeMarco Murray in the final 2 minutes.

Romo lost the past two winner-take-all finales – to the New York Giants two years ago and Washington last season. He also lost to the Eagles in the same situation in 2008 and now will miss a chance to improve his 1-6 record in elimination games.

Philadelphia (9-6) is trying to complete a worst-to-first turnaround from a 4-12 season under first-year coach Chip Kelly. The Cowboys (8-7) want to end a three-year playoff drought and avoid a third 8-8 finish in Garrett’s third full season as head coach.

Also, Cowboys linebacker Sean Lee will miss his third straight game with a sprained neck.

Gould signs extension

The Chicago Bears announced a four-year extension with kicker Robbie Gould. The deal is reportedly worth $15 million and includes more than $9 million in guaranteed money. Gould has hit 26 of 29 field goals this season, including a club-record 58-yarder in the opener against Cincinnati.

Jags lock up Marks

The Jaguars signed defensive tackle Sen’Derrick Marks to a four-year contract extension worth a reported $22 million. Marks has started all 15 games and has 28 tackles, seven pass breakups and four sacks.

Around the League

The NFL fined Buccaneers safety Dashon Goldson $60,000 and Rams linebacker Jo-Lonn Dunbar $21,000 for helmet-to-helmet hits. … Jets defensive lineman Sheldon Richardson was docked $15,750 for roughing the passer. … Buffalo rookie wide receiver Robert Woods was fined $15,750 for punching Miami safety Reshad Jones. … The New England Patriots released wide receiver Austin Collie for the second time this season. … Chiefs wide receiver Dwayne Bowe has a concussion and linebacker Tamba Hali some swelling in his knee, and both have been ruled out for Kansas City’s game Sunday at San Diego against the Chargers.