My daughter played three sports most of her teenage years, including all through high school and had multiple concussions. They suck. There is most definitely a protocol. Maybe Phillips had some residual affects from the second concussion - headache, light sensitivity, etc. Maybe his family was just being cautious given the heightened awareness of long term affects and made him shut it down. Could be a lot of reasons. I would think there will be extensive review of his medical history before any decision is made. We also don't know if there were any concussions in high school. Who knows if they were even documented - kids aren't always up front with coaches about stuff like that. Especially boys.