The Baltimore Ravens have a key divisional battle against the rival Cleveland Browns on Sunday, but their defense suffered a significant loss ahead of kickoff. Star defensive end Calais Campbell featured on Sunday's injury report, and he won't be active for the game due to a concussion, per The Athletic's Zac Jackson.

This is a big loss for the Ravens' defense, who will have their hands full with Cleveland's potent rushing attack, spearheaded by star running back Nick Chubb.

Campbell is a mainstay on Baltimore's defensive line, featuring in more than 70% of the defensive snaps in each of the past six weeks.

The defensive end sustained the concussion during Baltimore's Week 11 matchup against the Chicago Bears, and the ailment forced the 35-year-old to miss multiple practices during the week. After barely practicing, the Ravens decided to hold the veteran edge rusher out for the rivalry matchup, in hopes he'll be good to go in Week 13.

This season, Campbell has featured in 10 games for the Ravens, recording 36 tackles, 0.5 sacks, nine quarterback hits and a fumble recovery. He's a 14-year veteran who offers invaluable experience in the trenches for the Ravens, so his absence will surely be felt by the defense.

He had a big game in Week 11, recording three tackles, a pass defense, and a fumble recovery in the hard-fought win against the Chicago Bears. Campbell's next chance to play will come in Week 13 against the Pittsburgh Steelers. In his absence, second-year defenseman Broderick Washington is expected to see an increased role.