Nine years ago, Zackery Lystedt was a playing football game with his team at Maple Valley Junior High. Zack went back into the game in the fourth quarter after a hard hit in the third. The game ended, his dad, Victor, ran out onto the field to congratulate Zach for a good play. Zack told his dad that his head hurt. Then, he said, he couldn't see, and then Zack collapsed onto the field.