Bob McGinn of the Milwaukee Journal-Sentinel reports the Green Bay Packers fear that left tackle Bryan Bulaga may have suffered a torn knee ligament during Saturday night's scrimmage and Lambeau Field that will sideline him for the entire 2013 season.
Mike Florio of ProFootballTalk.com reports that Bulaga has a torn anterior cruciate ligament, which would also certainly end his season.
According to McGinn, Bulaga played 30 snaps in a live-contact practice, staying in with the first-team offense after coming up liming during a play in the first series. Bulaga remained on the field throughout the practice, but reported an issue with the trainers and received treatment in the locker room.
Bulaga, a 2010 first-round pick out of Iowa, has started 33 of 37 games during his first three seasons in the NFL, with almost all of his snaps coming at right tackle. Bulaga finished the 2012 season on injured reserve after suffering a fractured hip, but was healthy this offseason and the team has been in the process of moving him to the left side to protect Aaron Rodgers' blind side.
The Packers allowed 51 sacks in 2012, the second-highest total in the NFL. The Packers were also tied for 30th in the NFL (with the New York Jets) in Football Outsiders' "Adjusted Sack Rate" metric.
With Bulaga potentially out for the season, the most likely scenario would involve moving Marshall Newhouse back to left tackle, a position he's played for much of the last two seasons. The Packers used a fourth-round pick in 2013 on David Bakhtiari, an athletic, long-armed prospect who replaced Nate Solder as the left tackle at Colorado. Bakhtiari could be the long-term option at left tackle, but as the Packers did with Bulaga, they could have Bakhtiari begin his career on the right side.