The players know that risk. Just like you know every case will be different. In the medical industry my auditor-educator let me know it was a case by case basis.Rarely ever are the circumstances identical. Head injuries are no different sometimes they are healed as that person is a quick healer. Or the degree of the injury differs. If the players wants stricter guidelines, lobby for them. Otherwise follow protocol or don't. They always have an option. Other jobs out there...Yes I do have head injury management in football. And I can tell you with 100 percent certainty that clearing protocol does not equal being healed. It simply does not. His brain is still in a more vulnerable state than if he had not taken the first or the second. There is no scan, xray or test that can be administered on his brain to measure healing. Just risk reward. So explain to me the reward here.