K.J. Britt played through a thumb injury last week, but the Auburn senior linebacker won’t be able to keep doing so in the weeks to come.

According to Phillip Marshall of 247Sports.com, Britt is undergoing surgery to repair ligaments in his right thumb on Friday in Columbus, Ga. After the Tigers’ loss to Georgia last Saturday, Britt had an examination and was told he needed surgery, per Marshall, and it’s unclear if he’ll play again this season.

“I feel bad for him, this being his senior year,” Britt’s mother, Tonia, told Marshall. “Long-term, I think he will be fine. It could have been a lot worse.”

Britt had 23 tackles through Auburn’s first two games this season. Last year, he had 69 tackles, 2.5 sacks and a forced fumble while earning first-team All-SEC honors in his first season as a starter.

Not only is Britt a key member of the Tigers’ defense, but he’s also one of the team’s four captains this season. So, his loss will certainly be felt by Auburn moving forward this season.

Without Britt, the Tigers will look to bounce back from last week’s loss when they host Arkansas on Saturday at 4 p.m. ET on ESPN.