Lions' Alex Anzalone: Being evaluated for concussion

Anzalone (head) is being evaluated for a concussion during Thursday's contest against the Vikings.

Anzalone will not be eligible to return to Thursday's divisional matchup if he is diagnosed with a concussion and placed in the NFL's five-step protocol. Prior to leaving the field to be evaluated late in the third quarter, Anzalone had racked up two tackles (one solo) including 1.0 sacks.