After Keenum was slammed to the ground and hit his head, he grabbed his helmet and then struggled to get up, despite help from a teammate.
Once he was on his feet, he didn’t appear steady. The game never stopped and Keenum stayed on the field.
The Ravens won the game, 16-13.
According to NFL.com: “Rams coach Jeff Fisher, the league's Competition Committee chairman, seemed unaware of Keenum's concussion during his postgame press conference. He didn't mention the concussion, and he also alluded to getting Keenum a full week of practice.”
Jeff Miller, the NFL's senior vice president of health and safety said in August: "We don't expect this to happen a lot, but the athletic trainer is now empowered to stop the game if necessary to give the player the attention he needs.
"Concussions and head and neck injuries are really important and they need immediate attention. Therefore that was going to predominate over any potential competitive concerns."
In a statement on Monday, the NFL said it had began a review into "why he was not removed from the game for the necessary evaluation by a team physician or the unaffiliated neuro-trauma consultant as required by our concussion protocols."