Before moving on to the game, a dull affair in which the Giants lost 2-0, take the time to punch yourself in the face with the Norichika Aoki news.
— San Francisco Giants (@SFGiants) August 12, 2015
He originally passed the concussion tests, but concussions are bedbugs of the brain, always lurking behind an outlet, even after you're given the all-clear. There's always a fear that they'll come back, if not now, then in six months or six years from now. It's possible to read too much into Aoki's lightheadedness, sure, but only because for decades we didn't read enough into concussions, so we're way more vigilant and nervous about the brain than we used to be.