Former Tonga captain

Former Tonga captain Inoke Afeaki warns World Rugby to scrap tactical substitutions

Former British Lions captain Sam Warburton even went as far as to suggest that "if something isn't done soon, a professional player will die during a game in front of TV cameras."

That theme has been picked up by five Lions legends, who sent an open letter to World Rugby demanding that the substitution rules are scrapped before it's too late.