The results are in on the NFL's Cam Newton concussion protocol investigation

The NFL and the union for the players have completed a review of how the concussion protocol was handled during the opening night contest between the Panthers and the Broncos, and they have determined that everything was done according to policy.

Cam Newton took a series of hits during that game, and one in particular was cause for concern.

But the league and the NFLPA issued a joint statement on Wednesday stating that their investigation showed that everyone involved worked together properly and made the appropriate evaluation that Newton was fine to return.

After reviewing the replay and observing Mr. Newton from the sideline, the Panthers' medical staff and the UNC agreed that no further evaluation of Mr. Newton was necessary as they did not observe signs or symptoms of concussion. ...

Collaboration between the Team Physician and the UNC, who is jointly appointed by the parties, is a critical aspect of the Concussion Protocol and therefore bears emphasis. In both instances, the reviews of the NFL and NFLPA determined that the club physicians and UNCs worked closely together to review the plays at issue and jointly made medical determinations regarding evaluation and diagnosis; in each instance, the medical determination made revealed that neither player had sustained a concussion.

The release discusses a similar situation involving Bills quarterback Tyrod Taylor which occurred on Sept. 15, and a review of how the protocol was handled in that instance also showed that everything was handled according to policy, and that the correct determination was made.