South Africa were expected to beat Namibia without any problems, and that was how it played out as Rassie Erasmus' side grabbed nine tries.
Ireland's Rugby World Cup hopes took a huge hit as hosts Japan produced another finals shock in Shizuoka.
Argentina made a fast start on their way to a Rugby World Cup victory over Tonga.
Ruan Pienaar inspired the Cheetahs to victory over the Glasgow Warriors on Friday, while Ulster were too good for the Ospreys.
England have been perfect in their Rugby World Cup campaign so far, according to Eddie Jones, whose side thrashed the United States 45-7.
Canada were unable to run Italy close again as Conor O'Shea's team scored seven tries in a 48-7 victory at the Rugby World Cup.
Eddie Jones made 10 changes to the England XV and saw his side overpower the United Sates in Pool C.
Uruguay claimed their third Rugby World Cup win with a shock victory over Fiji.
Samoa went down to 13 men during the first half, but Russia failed to capitalise before Steve Jackson's side cruised to a bonus-point win.
Gareth Davies put in an inspired first-half display as Wales got their Rugby World Cup up and running with a 43-14 triumph over Georgia.
England got their Rugby World Cup campaign off to a winning start, Manu Tuilagi starring with two tries as Eddie Jones' side beat Tonga.
Rory Best began his final Rugby World Cup campaign with a try as Ireland accelerated away from Scotland en route to an opening win.
Italy won a Rugby World Cup opener for the first time since 1991 after triumphing in their Group B clash in Osaka.
South Africa started vibrantly but were put to the sword by New Zealand in an incredible first-half spell that changed the game.
Camille Lopez's first act after coming on was to score a match-winning drop-goal to spare France's blushes against Argentina.
Australia produced a strong second half to overcome Fiji in Pool D at the Rugby World Cup.