New Zealand booked their place in the Cup quarterfinals at the Wellington Sevens with a dominant 54-0 win against Japan.
Leading 26-0 at the break even the sin-binning of Lote Raikabula on the stroke of half-time did not hamper the joint HSBC Sevens Series leaders who continued to pile on the points in the second spell.
Eight tries were scored in all, with Tomasi Cama converting seven of them.
Bryce Heem and Cama bagged a brace of tries each as the defending Wellington champions, minus Toby Arnold who was injured in the opening win over Scotland, took control of the pool A game early.
Solomon King added a fifth just after the break before Hosea Gear, who had been the provider for Heem and Cama in the first spell on, dotted down in the corner.
Mark Jackman's try took New Zealand to within sight of the half-century before Gear rounded off in style with his second.
The biggest upset of the day came in pool C where Fiji went down 14-17 to Tonga, who drew 14-14 earlier in the day with Wales.
The joint series leaders are in danger of missing out on the Cup quarterfinals altogether as Wales, who beat Argentina 19-7 in their second match, and Tonga top the standings after two rounds of matches.
Fiji will need to beat Wales in their final match of day one if they are not to be contesting the Bowl on Saturday.
In pool B England and South Africa have both qualified for the Cup quarterfinals after holding the United States and Cook Islands scoreless in their respective second round matches.
South Africa looked in ominous form against the rugby minnows racking up 43 unanswered points. England had to work a bit harder for their 29-0 win over the improving Americans.
Pool D is wide open after France held on against a fast-finishing Kenya to win 24-17 and Australia did likewise to beat Canada 14-12.
Nathan Hirayama missed a conversion for the Canadians that would have tied the match.
It means all four teams in the group are on four points after a win and a loss apiece.