"I had major concussions myself. Am I on that slippery slope? I don't know that," said Strock, a quarterback in the 1970s and 1980s, mostly as a backup to Dan Marino with the Miami Dolphins. "Will this help protect me in the years to come? Yes. That's what it's for _ something there in case you need it down the road. Right now, I don't need it, knock on wood."