An already forgettable performance for Eddie Lacy ended abruptly in Seattle.

The Green Bay Packers running back left Thursday night’s 36-16 loss to the Seahawks in the fourth quarter after sustaining what coach Mike McCarthy confirmed after the game to be a concussion. It was Lacy’s second such injury in 17 career NFL games.

Lacy likely suffered the concussion on a head-to-head collision with Seahawks safety Cam Chancellor. Though the second-year back muscled past Chancellor, he remained in the game for only one more play before exiting.

The Seattle defense swarmed Lacy — last season’s NFL Offensive Rookie of the Year — all night, limiting him to 34 yards on 12 carries.

The Packers also lost right tackle Brian Bulaga to a knee injury during the season-opening loss, though McCarthy said the team does not believe that injury is serious.

“As of right now, we do not fear a major injury,” the head coach said, via ESPN.com. “So, that’s kind of where it stands. Until we get back and get the scans and everything, we’ll know better, but right now, the trainers’ words were they do not fear a major injury.”

Green Bay has a 10-day break before taking on the New York Jets next Sunday in Week 2.

Thumbnail photo via Joe Nicholson/USA TODAY Sports Images