It has been reported by ESPN’s Adam Schefter that wide receiver Cooper Kupp sustained an MCL sprain on Sunday against the Denver Broncos:
Rams’ WR Cooper Kupp suffered an MCL sprain Sunday and his team thinks he “could miss some time, but not sure yet,” per source.
— Adam Schefter (@AdamSchefter) October 15, 2018
During the game, Kupp was horse collar tackled by Broncos safety Darian Stewart. After the injury, Kupp was carted off the field but did return to the game. He tried to play with the injury but was removed from the remainder of the game as a precaution according to Head Coach Sean McVay.