Both the Springboks and the All Blacks have a chance to take over from Ireland at the top of the world rankings this weekend, although the Boks have a much harder task.
Billy Vunipola has been banned for the start of England's World Cup campaign after receiving a three-week suspension for his red card against Ireland.
England suffered a 29-10 defeat at the hands of Ireland, as their World Cup preparations hit another snag, after Billy Vunipola was shown a red card.
Caelan Doris shone and Jack Conan suffered an injury scare as Ireland launched their World Cup warm-up fixtures by easing to a 33-17 win over Italy in Dublin.
Forwards coach Paul O'Connell feels the locks Ireland have selected are 'big' enough to justify the exclusion of Munster star Jean Kleyn.
Ireland wing James Lowe has taken the philosophical approach with regard to their upcoming Rugby World Cup campaign.