Cowboys' Tyron Smith out for season, will undergo neck surgery

Dallas Cowboys left tackle Tyron Smith will miss the remainder of the season due to a neck injury that will require surgery, head coach Mike McCarthy announced Friday, per NFL Network's Mike Garaolo.

Smith played in Week 1 before missing two games due to the injury. He returned in Week 4 against the Cleveland Browns and played 100% of the snaps, but apparently suffered a setback.

The Cowboys' offensive line has already been ravaged by injuries.

Right tackle La'el Collins is out of the year with a hip injury, while center Joe Looney - who replaced the retired Travis Frederick this offseason - is set for a multi-week absence due to an MCL sprain.

Star guard Zack Martin will be the lone holdover from when the unit was considered among the league's best:

Smith, a seven-time Pro Bowler, has struggled to stay healthy throughout his career. The 29-year-old last played a full 16-game slate in 2015.