Los Angeles Rams wide receiver Brandin Cooks suffered a concussion against the Seattle Seahawks.
The Rams announced Cooks won't return to the game. He was injured after a helmet-to-helmet hit from Seahawks safety Tedric Thompson.
The Rams acquired Cooks from the New England Patriots in the offseason after he enjoyed a productive 2017 campaign in New England. Los Angeles then rewarded him with a five-year extension worth $81 million.
The 25-year-old caught 65 passes for 1,082 yards and seven touchdowns, and his 16.6 yards per reception were a career high.