Warren Gatland felt the change in referee knocked Wales off their stride as they crashed out of the World Cup with a 29-17 quarter-final defeat to Argentina in Marseille.South African official Jaco Peyper hobbled off with a calf injury after Wales had scored their first try in the 15th minute, taking a 7-0 lead in a match they had dominated.But with Karl Dickson replacing Peyper their ascendency slipped away and Argentina came on strong in the second half with tries from Joel Sclavi and Nicolas

Warren Gatland felt the change in referee knocked Wales off their stride as they crashed out of the World Cup with a 29-17 quarter-final defeat to Argentina in Marseille.South African official Jaco Peyper hobbled off with a calf injury after Wales had scored their first try in the 15th minute, taking a 7-0 lead in a match they had dominated.But with Karl Dickson replacing Peyper their ascendency slipped away and Argentina came on strong in the second half with tries from Joel Sclavi and Nicolas Sanchez sweeping them into the last four.