Cowboys Left Tackle Tyron Smith suffered avulsion fracture of knee, could be Sidelined for Several Months

Tyron Smith, a Pro Bowl left tackle, won't be available to the Dallas Cowboys for a sizable portion of the season 

NFL Network Insider Ian Rapoport said on Thursday that Smith required surgery after suffering an avulsion fracture of the knee during practice on Wednesday  

The 31-year-old suffered a non-contact injury during practice but was able to get up and leave on his own   

Jerry Jones, the owner of the Dallas Cowboys, admitted on Thursday's episode of ESPN's First Take that he is unsure if Smith would require surgery    

We'll have him and we'll have him at the appropriate moment, Jones assured. We'll include him in that game against San Francisco    

The eight-time Pro Bowler, who has missed 20 games over the past two seasons and hasn't played a whole season since 2015, the Cowboys have become accustomed to playing without him    

Tyler Smith, a left tackle in college, was selected by Dallas as the eventual replacement for the blind side