Cooper ruled out with concussion after scary hit vs. Broncos

Oakland Raiders receiver Amari Cooper has been ruled out for the remainder of Sunday's game against the Denver Broncos with a concussion.

The star wideout was taken to the locker room in the second quarter after he was on the receiving end of a massive hit while attempting to haul in a catch over the middle.

A cart was brought out for Cooper but, encouragingly, he was able to walk off the field with some assistance.