The New Zealand men's and women's sevens teams have booked quarter-final berths after strong starts to the Hamilton leg of the world series on Saturday.
The women's Black Ferns Sevens brushed aside Papua New Guinea 58-0, with Stacey Fluhler crossing for three of their 10 tries.
The Olympic champions kept their tryline clean in their second match, swatting aside Fiji 27-0, meaning they will contest Sunday's knockout phase regardless the result of Saturday night's final pool match against Great Britain.
Australia, who share the series lead with New Zealand after two tournaments, also started with two wins from two, along with Ireland and the United States.
The New Zealand men's team had to work harder, outclassing Tonga 45-0 before facing stiff resistance in a 21-19 defeat of Australia.
Roderick Solo's late try proved decisive, along with the conversion from Akuila Rokolisoa.
Series leaders Samoa opened with a 31-5 defeat of Kenya but dropped their second match, 21-10 to France.
- RNZ