Blue cards to be trialled in Australia to help manage rugby union concussion

Players showing signs of concussion will be shown blue card and sent offInitiative to be trialled in ACT and Newcastle competitions from SaturdayReferees will be given the power to brandish blue cards over the coming weeks as the Australian Rugby Union trials a new system aimed at better managing the effects of concussion in the sport.Competitions in the ACT and Newcastle will serve as guinea pigs for the initiative, starting this weekend, when on-field officials will be able to send a player who is showing signs of concussion to the sidelines. Related: England will not face New Zealand in aut…