Olympic champions Fiji, Australia and New Zealand all progressed to the quarter-finals in style with three pool stage victories ©World Rugby

Olympic champions Fiji, Australia and New Zealand all progressed to the quarter-finals in style with three pool stage victories on an opening day full of surprises at the World Rugby Sevens Series event in Singapore.

The Pacific nation, winners of the Hong Kong Sevens last weekend, booked their place in the last eight by topping Pool A with a 100 per cent record.

Fiji began by thrashing Hong Kong 52-0, before they swept aside Russia 38-7 and Canada 35-7 to complete an ominous start to the tournament at the National Stadium.

New Zealand also progressed with three straight victories as they clinched top spot in Pool D.

The All Blacks Sevens were pushed all the way by Scotland in their group opener as they battled to a narrow 22-21 win.

They enjoyed a much more comfortable outing when they clashed with Wales, claiming a 36-14 victory to set up a pool decider with the United States.

New Zealand also progressed with a 100 per cent record ©World Rugby
New Zealand also progressed with a 100 per cent record ©World Rugby

New Zealand got the better of their American opponents with a 21-14 win to follow Fiji into the quarter-finals.

Australia were the other team at the event, the eighth stop on the Sevens Series calendar, to qualify with a 100 per cent record.

The Australian side ended the day at the summit of Pool D as they ousted Samoa 19-12, defending Singapore Sevens champions Kenya 29-7 and Argentina 19-7.

Fiji will play the US in tomorrow's quarter-finals, while Australia are set for a mouthwatering battle with South Africa, the current Series leaders who suffered a surprise 17-12 reverse at the hands of England, winners of Pool C.

New Zealand will play Canada and England, who themselves were on the end of a shock loss as they were beaten 24-14 by France, will take on Kenya.