Green Bay Packers offensive tackle Bryan Bulaga has been ruled out for the season with a knee injury.
Bulaga is reported to have suffered the injury during an intra-squad scrimmage session on Saturday, although he completed the practice and only complained about a problem afterwards.
The Packers feared that the injury could be serious, and that news has now been confirmed.
Bulaga, who had recently been moved from right guard to left guard, reportedly tore an ACL, which will keep him out of the entire 2013 season.
The Packers, who will now have to reshuffle their offensive line once again, are yet to comment on the injury having cancelled training on Monday.