All the big guns are still unbeaten at the Hong Kong leg of the IRB World Sevens Series, but the heat is on for the final pool matches on Day Two.

Series leaders New Zealand and South Africa will do battle in Pool B, while England and Samoa face-off in Pool A and Fiji and Australia aim for top spot in Pool C.

This year in Hong Kong there are two 12-team competitions, which take place side by side.

Competition One, for the Cup, is between the current 12 'core teams' in the World Series. The pool winners, pool runners-up and two best third-place finishers will go through to the Cup quarterfinals. The losers of the Cup quarter finals will go through to the Plate semifinals; the four not involved in the Cup quarterfinals will go straight to the Bowl semifinals.

In Competition Two 12 teams from across the six IRB regions, three of whom – the two finalists and the winner of the third/fourth place play-off – will secure core team status and join the 12 existing core teams at each round of the 2012/13 Sevens World Series.

We bring you all the action from the main 12-team Cup competition!

Pool A:
(Samoa, England, Argentina, Kenya)

USA Sevens champions Samoa began their Hong Kong Sevens campaign with a 19-7 victory against Kenya thanks to tries from Ken Pisi, Paul Perez and Alatasi Tupou before two tries from Afa Aiono scored twice in their 27-0 victory against Argentina.

They will be looking for a second successive Cup victory this weekend in Hong Kong and they face a pool decider with England later on day two.

England are fourth in the World Series standings and got off to a winning start in front of the ex-pat crowd, beating Argentina 19-10 thanks to tries from Dan Norton, Rob Vickerman and Mat Turner.

On day two, Norton completed a hat-trick, taking him level with Frank Halai on 27 tries for the season, as Ben Ryan's side held on to a narrow 21-17 victory against Kenya.

Argentina finished third after beating Kenya 19-7.

Results:
England 19-10 Argentina
Samoa 19-7 Kenya
Argentina 19-7 Kenya
Samoa 27-0 Argentina
England 21-17 Kenya

Pool B:
(New Zealand, South Africa, Wales, United States)

Current Series leaders New Zealand came from 7-0 behind against Wales to win 24-7 and make it two wins from two after defeating USA 29-5 thanks to another impressive performance from the influential Tomasi Cama on day one.

South Africa beat Wales 10-0 in the second Pool B match, the day's penultimate match, thanks to tries from Boom Prinsloo and Cecil Afrika, before Afrika scored their third try in their 15-7 victory on day two against USA.

Dan Smith and Richard Smith both scored two tries, and Alex Walker kicked 12 points as Wales finished third in Pool B after a convincing 42-7 victory against USA.

Results:
South Africa 10-0 Wales
New Zealand 29-5 United States
Wales 42-7 USA
New Zealand 24-7 Wales
South Africa 15-7 USA

Pool C:
(Fiji, Australia, France, Scotland)

Fiji defeated France 26-12 to claim their second win of the tournament thanks to two tries from Metuisela Talebula.

In their opening match, Isikeli Tulwainunu Vuruna scored two of Fiji's seven tries as the side currently lying second in the World Series beat Scotland 39-5. The Gold Coast Sevens champions now face a pool decider with Australia.

Allan Fa'alava'au scored Australia's second hat-trick of the tournament, as they beat Scotland 29-14 to maintain their 100% record.

Greg Jeloudev scored their first hat-trick against the Dubai Sevens runners-up France as they began their Hong Kong Sevens campaign with a 31-10 victory.

Scotland finished third in Pool C after coming from 12-0 behind at half time against France, as Sean Kennedy scored with the last play of the match and Colin Gregor kicked the crucial conversion in the 14-12 victory.

Results:
Australia 31-10 France
Fiji 39-5 Scotland
France 12-14 Scotland
Fiji 26-12 France
Australia 29-14 Scotland

We bring you all the action from the core team qualifying competition!

Russia, Portugal, Spain and hosts Hong Kong win both of their opening pool matches in the core team qualifying competition, whilst Zimbabwe shock Canada 24-21.

Pool D:
(Tonga, Uruguay, Hong Kong, China)

Hosts Hong Kong progressed to the quarter finals after beating China 29-5 thanks to nine points from Keith Robertson, making it three wins from three on home soil.

Earlier they shocked Tonga and made it two wins from two as they scored three unanswered second half tries to win 26-7 against the South Sea islanders.
Dai Rees' side also proved too strong for Uruguay as they were buoyed by the home crowd to win 17-14 on day one thanks to tries from Tom McQueen, Keith Robertson and Ross Armour.

Tonga's performance in Wellington in New Zealand, where they beat Fiji, Argentina and drew with Wales saw them favourites to progress as Pool D winners, but had no answers to Hong Kong.

In their first match they came from 5-0 behind to beat China 33-12. Li Yang had scored the opening try of the match, but five tries for Tonga secured victory heading into day two.

Uruguay suffered a second defeat, dramatically conceding a try in the final play of their match against China. Liu Guanjan scored his second try after the buzzer had sounded, captain Li Jialin also scored twice in the match.

Results:
Uruguay 14-17 Hong Kong
Tonga 33-12 China
Hong Kong 29-5 China
Tonga 7-26 Hong Kong
Uruguay 26-29 China

Pool E:
(Canada, Spain, Zimbabwe, Philippines)

Spain maintained their 100% record at the Hong Kong Sevens, beating the Philippines 21-5 thanks to 11 points from Cesar Sempere who scored the first of their three tries.

On day one Javier Canosa, captain Pablo Feijoo and Pedro Martin all scored for Spain as they beat Zimbabwe 19-5.

Zimbabwe bounced back from their opening day loss to record two victories on day two, 24-21 against Canada and 21-17 against the Philippines.

Five different players scored tries for Canada as they beat the Philippines 35-5 in the second match of day one but the biggest cheer of the match came when Justin Coveney scored for the losing side.

Results:
Spain 19-5 Zimbabwe
Canada 35-5 Philippines
Zimbabwe 21-17 Philippines
Canada 21-24 Zimbabwe
Spain 21-5 Philippines
 
Pool F:
(Portugal, Russia, Japan, Guyana)

Russia made it two wins from two as they came from 12-0 behind to beat Guyana 14-12 in their first match on day two, thanks to second half tries from captain Dmitriy Perov and Ivan Kotov in the final play of the match.

In 2011 Russia reached the Cup quarter finals in Hong Kong, and face a third pool match against Portugal having already beaten Japan 14-7 in their first match, Vladimir Ostroushko breaking a 7-7 half time deadlock.

In yet another match decided with the last play, Portugal won their second match after coming from 22-0 behind at half time to beat Japan 26-22, Aderito Esteves scoring his second try after the buzzer had sounded.

On day one Pedro Leal scored twice in the opening match of the tournament as Portugal secured a 19-0 victory against Guyana. Guyana suffered a third defeat in their final pool match, losing 38-5 to Japan as Shohei Toyoshima and Yoshikazu Fujita both scored two tries.

Results:
Russia 14-7 Japan
Portugal 19-0 Guyana
Japan 38-5 Guyana
Portugal 26-22 Japan
Russia 14-12 Guyana