Dallas Cowboys guard Zack Martin has been ruled out for the rest of the season.
Martin, who has played 10 games this year, requires surgery on an ankle injury.
It means he will miss the Cowboys' final five games of the season. Martin is out of contract this year and has previously opened the door on possibly retiring.
He is one of the best offensive linemen in the NFL and has been voted first-team All-Pro on seven occasions.
Martin's absence is another huge blow for the Cowboys, who stand at 5-7 going into Monday Night Football against the Cincinnati Bengals.
More to follow.
Cowboys guard Zack Martin has been ruled out for the rest of the season due to an ankle injury