Packers quarterback Aaron Rodgers was knocked out of Sunday’s game during his fourth pass, when Vikings linebacker Anthony Barr hit him shortly after he threw.

Rodgers, who completed 2 of 4 passes for 18 yards before exiting, was evaluated in Green Bay’s medical tent and carted off the field. He suffered a broken collarbone that will sideline him for weeks, if not the remainder of the season.

“It’s devastating, no question about it,” said Packers receiver Randall Cobb. “First and foremost, that is one of my closest friends, so to see him go down, that is tough. We still have to play football. We have a long season ahead of us to figure out what we are going to do.”

The Vikings defense rolled without Rodgers. Backup quarterback Brett Hundley threw an interception on his first pass, a tipped ball to cornerback Xavier Rhodes. Hundley was sacked twice and completed 4 of 8 passes for 43 yards, a touchdown and the pick in the first half. He finished 18 off 33 for 157 yards and three interceptions, with Harrison Smith and Trae Waynes both adding takeaways to Hundley’s day in an emergency role.

Packers center Corey Linsley isn’t ready to pull the plug on the season.

“I think a lot of people don’t understand that we don’t cycle through backups,” Linsley said. “Brett Hundley has been by Aaron Rodgers’ side, and Rodgers has been teaching him, educating him and showing him everything to do.”

Sometime during the first half, Barr suffered a concussion and he was ruled out during halftime. He had one tackle, a pass deflection and two quarterback hits against the Packers.

Packers cornerback Quentin Rollins was also forced from the game due to an ankle injury.