MELBOURNE :Flyhalf Tom Lynagh and centre Len Ikitau have been ruled out of Australia's Rugby Championship test against Argentina in Sydney on Saturday in a blow for the Wallabies. Lynagh is nursing a hamstring strain following the last-gasp 28-24 win over the Pumas in Townsville, while Ikitau has a laceration on his knee that had failed to heal enough to take the field on Saturday, Rugby Australia said in a media release on Thursday. Tane Edmed will wear the number 10 jersey for the first time