Are you freaking kidding me?!?!?!? Have we not seen what effects concussions have had on players. Crosby as well as others. Why risk it? You're talking about your career as well as your life after your career.
"It was so minor at first it took some time to realize it might be something more serious," he said.
Symptoms of a concussion does always show themselves right away. Sometimes they are delayed. This quote makes me think that thats the situation here. Even the athletic trainer probably thought that it was nothing at first.