The Cleveland Browns have placed linebacker Christian Kirksey and cornerback E.J. Gaines on injured reserve for the rest of the season.
Kirksey, one of the team's captains, hurt his hamstring in Sunday's loss to the Chiefs. Gaines incurred his second concussion in three weeks in the same game.
The Browns are feeling the brunt of injuries on the defensive side of the ball. Starting cornerback Terrance Mitchell is on injured reserve with a broken wrist; he could return for the final four games.
Cornerback Denzel Ward injured his hip and had to leave the game against Kansas City; his status will be clarified when the injury report is released.