Dallas Cowboys guard Zack Martin will undergo season-ending ankle surgery, head coach Mike McCarthy announced on Thursday.
The nine-time Pro Bowler last played on Nov. 18, when he suffered the injury in a Week 11 loss to the Houston Texans.
He had previously been listed on Cowboys injury reports with back and shoulder issues, but had yet to miss a game prior to Week 12.
The Cowboys will now have to finish out the season without a key part of the team's offensive line. T.J. Bass and Brock Hoffman are likely to continue to get more playing time at right guard in his absence.