Dallas Cowboys quarterback Tony Romo broke his left collarbone in his team's costly win versus the Philadelphia Eagles on Sunday.

ESPN said Romo sustained the injury during the third quarter of the game at the Lincoln Financial Field after a sack by Eagles linebacker Jordan Hicks. It added that the quarterback knew that he broke his collarbone as he laid on the ground since he had the same feeling 5 years ago when he had the same injury.

He will reportedly miss 10 weeks of the games for him to fully recover.

On Monday, he is expected to undergo more tests like an MRI scan to know if he would need to have a surgery.

"We have to determine how much muscle damage there is in the shoulder. Then we will have a better idea on the length of time he will miss," said Cowboys coach Jason Garrett in the ESPN report.

In an interview after the game, Romo mentioned that he felt his collarbone broke.

"I felt it. It has a little bit of a pop to it. Obviously I've felt it before. Your body kind of goes into a little bit of shock," the quarterback said in a Yahoo Sports report.

The Cowboys may have won Sunday's game 20-10 with a 2-0 record for the season but they felt like they lost one of their biggest matches since Romo will join Cowboys wide receiver Dez Bryant who is out with a broken foot.

"It was a great victory. But a huge loss," said defensive end Jeremy Mincey, who also claimed that Romo looked sad as he came out from the locker room in a sling.

But he remained positive as he said in a USA Today report that the Cowboys will be tested with this recent setback.

"The NFL is really about adversity in general. It's how you handle it, how you approach it on a day-to-day basis, individually and collectively as a team. The job for our football team is to find a way to win," he added.

Romo also told The New York Times that he is positive he will come back within the season.

"I've had it before so we'll deal with it and move on," he added.

This is still, however, unsure since official announcement of his status will be announced Monday.

After he left the game due to his injury, The New York Times said quarterback Brandon Weeden took his place and "did well" in the remaining part of the game. The problem of the team, however, is that they reportedly do not have a third quarterback on their roster.