Cowboys confirm DE Sam Williams has torn his ACL and MCL

An MRI confirmed what the Cowboys feared: Defensive end Sam Williams’ season is over.

The team confirmed that Williams tore the ACL and MCL in his left knee during Sunday’s training. He will undergo surgery to repair the damage.

The Cowboys’ first serious injury of training camp occurred during their first practice with full protection.

It’s a tough call for both Williams and the Cowboys, as he was expected to contribute behind Micah Parsons and DeMarcus Lawrence. Williams totaled 8.5 sacks in his first two years.

The Cowboys did not re-sign Dorance Armstrong and Dante Fowler, counting on Williams to step up. They also used a second-round pick on Marshawn Kneeland.

Durrell Johnson and Junior Fehoko now also get an even bigger chance.