The NFL has initiated a review of the concussion protocol after Matt Moore missed just one play after getting obliterated by a hit by Bud Dupree in Sunday's playoff game between the Miami Dolphins and Pittsburgh Steelers.

Under the procedure approved by the collective bargaining agreement, the NFL, in consultation with the NFLPA, will review the video, relevant documents and interview the involved parties to determine whether the protocol was properly followed.

Dupree was flagged for roughing the passer on the play.

"Yeah, I just got popped," Moore said. "Needed a second there. So got checked out, felt fine, was really more my jaw than anything else. Felt good, came back in, was fine. But he got me pretty good."

The swiftness with which Moore was cleared led to some questions about the process of checking the quarterback for a potential concussion.