Dallas Cowboys quarterback Tony Romo injured his left collarbone after being sacked by Carolina Panthers linebacker Thomas Davis on Nov. 26 (video below).
Romo underwent a CT scan on Nov. 27 that showed he had a small crack in the same part of his collarbone that had healed after his injury on Sept. 20 against the Philadelphia Eagles, sources told ESPN.
Romo missed seven games after his injury against the Eagles, came back for a win against the Miami Dolphins on Nov. 22, but had to be pulled out of the game against the Panthers.
"We wouldn't let Tony play if he wasn't ready to play physically," Cowboys coach Jason Garrett said after the 33-14 loss to the Panthers. "There is no evidence we brought him back too soon."
Cowboys owner Jerry Jones told 105.3 The Fan, a Dallas radio station, on Nov. 27 that Romo was out for the season, but will not have to undergo surgery, notes NBC Sports.
Back up quarterback Matt Cassel will return to the starting position, and former Detroit Lions quarterback Kellen Moore will likely be pulled off the Cowboy practice squad and added to the lineup.
There are questions as to whether Romo, who will turn 36 next year, has much of a career left. He is signed with the Cowboys through 2019.
Babe Laufenberg, a Cowboys radio analyst, told The Dallas Morning News: "Hey, I don't know if Tony Romo has 3 seasons left in his career or 3 games. But if nothing else, this year has vividly and painfully exposed that there has to be an urgency to find his replacement. It has to be at the very top of any organizational priority. And it has to begin yesterday."