The Springboks have risen to the fourth position, All Blacks moving to second with Ireland occupying the top spot.
The All Blacks got exactly what they wanted from their final match ahead of the World Cup when they demolished Tonga 92-7 on Saturday, and deliberately chose to play the last 15 minutes a man down, coach Steve Hansen said.
The All Blacks fell just short of 100 points in a merciless display against Tonga in Hamilton, where they scored 14 tries to one.
Beauden Barrett kicked seven conversions, playing only the first half, and Josh Ioane added four on debut after taking over the goal kicking in the second half.
"So, it is an unique challenge to us and if we really embrace that, like I said before, and have fun doing it then that helps you deal with all the pressure that comes with it".
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The All Blacks' forwards were dominant at breakdowns, giving their team an nearly constant supply of possession.
However, it has been revealed that England players are set to share a jackpot of nearly triple the amount of the New Zealand prize pool. Smith scored both of his tries from long range after breakdown turnovers.
If the All Blacks' extraordinary welcome in Japan gives any indication of what the tournament will be like, head coach Steve Hansen couldn't be more excited. Reece turned the ball infield to Crotty and he passed to Savea who finished like a winger.
Portugal, which is not going to the World Cup, took over Canada's spot at No. 21.
This match was never about the final score - which was impressive for the All Blacks and poor for Tonga, who were soundly beaten by halftime and yet rallied in the final moments to have the last word with a try for their skipper Siale Piutau.
"A loss like this is hard for the boys to take", Piutau said.
"This World Cup is going to be incredibly tough and the motivation is to get your name and your team into history - a three-peat would be massive for the boys".