Australia, South Africa, the United States and Fiji secured their place in the quarter-finals with their unbeaten records in tact on another thrilling day of action at the Hong Kong Sevens.
The Australian team began with a thumping 52-0 victory over South Korea before they picked up their third straight success by earning a narrow 12-10 win against England to ensure they topped Pool A at the Hong Kong Stadium.
England followed Australia into the last eight by finishing second in the group.
South Africa, the current overall World Rugby Sevens Series leaders, also claimed three pool victories as they beat Kenya 35-10 and then overcame Canada 26-7.
They were joined in progressing to the quarter-finals by the Canadian side.
One of the big surprises on day two came when Wales battled to a draw with Olympic gold medallists Fiji in Pool C.
The two sides played out a pulsating contest in searing heat in Hong Kong as the match finished all square at 17-17.
The Pacific nation still managed to clinch top spot in the group as they sealed a hard-fought 17-14 triumph against New Zealand, who had put in an impressive display with a 40-17 thrashing of Japan, fourth at last year's Olympic Games in Rio de Janeiro.
Despite the narrow loss to Fiji, New Zealand also qualified for the next round.
A hat-trick from Perry Baker helped the US guarantee their quarter-final berth as they recorded a 19-14 win over Scotland in Pool D.
The American outfit matched the performance of their Australian and South African counterparts by beating Argentina 33-5 in their third and final group match.
The result saw them end the pool phase with a 100 per cent record.
In the last eight, Australia will play Argentina, while Fiji entertain Canada and the US clash with England.
The last quarter-final will be a mouthwatering encounter between South Africa and New Zealand.