Playing through concussion 'part of the game ' Similar rules appear in the Zackery Lystedt law , passed in Washington in 2009 . Carmen also wants to be in ` ` new league '' ' . Roda requires mandatory concussion education courses for players and parents . Parents concerned about ` ` weakening '' the team , he says .
Carmen also wants to be in ` ` new league '' ' . Roda requires mandatory concussion education courses for players and parents . Parents concerned about ` ` weakening '' the team , he says .