Coach Kevin Stefanski said after Sunday's 36-19 loss to the Rams that Cooper suffered a concussion during the game, Jake Trotter of ESPN.com reports.
Cooper was evaluated for a concussion after exiting with a head injury in the second quarter, and Stefanski revealed that those tests confirmed a concussion for the wide receiver. Prior to exiting, Cooper caught three of five targets for 34 yards. He'll have to clear the NFL's five-step concussion protocol in order to suit up in Week 14 against the Jaguars.