WARREN Gatland last night called for World Rugby to use their powers to tame South African’s head of rugby Rassie Erasmus and save “the game’s integrity”.The Lions boss believes the game’s governing body must step in to prevent Erasmus making any more outrageous social media rants which he has used to criticise and influence officials.Gatland clearly felt Erasmus’ hour-long video in the week may have influenced referee Ben O’Keeffe, who chose not to send off Bok wing Cheslin Kolbe for a dangerous tackle on Conor Murray.Gatland said...