FOXBOROUGH, Mass. -- Buffalo Bills receiver Marcus Easley left his team's Monday Night Football game against the New England Patriots with a head injury.
The Bills said he would undergo testing for a concussion and would not return to the game.
The NFL's handling of concussions is under increased scrutiny after St. Louis quarterback Case Keenum was knocked woozy during his team's game against the Baltimore Ravens on Sunday. Keenum remained in the game but fumbled two downs later.
The league said Monday that it would investigate whether protocol was followed.