OLYMPIC SEVENS: South Africa impress with defence
MEN'S SEVENS DAY ONE UPDATE: After two games in the Olympic Sevens competition, South Africa are yet to concede any points.
After beating Spain 24-0 in their opening game, South Africa then defeated a strong French team 26-0.
Australia bounced back from their defeat against France with a hard-fought win against Spain.
In Pool A, Fiji continued their winning ways when they edged Argentina 21-14, while the USA bagged their first victory with a 26-0 win over hosts Brazil.
In Pool C, Great Britain had to fight for their 21-19 win over a plucky Japanese outfit, while New Zealand kept their medal hopes alive with a 28-5 win over Kenya after they lost their first game against Japan.
(Fiji, Argentina, USA, Brazil)
Brazil played some brilliant rugby in the opening few minutes of the match against the USA. However, it was the North Americans who opened the scoring against the run of play via Folau Niua.
Super Bowl winner Nate Ebner scored the USA's second converted try just before half-time for a 14-0 scoreline.
Speedster Carlin Isles and Maka Unufe scored a try each to hand the USA a comfortable 26-0 win.
Fiji dominated the opening few minutes in their game against Argentina and powerhouse Josua Tuisova was an example of this when he crashed through for the game's first try.
However, Argentina did hit back soon after when Franco Sabato was put into some space to sprint away for a score.
At half-time, it was all level at 7-7.
Argentina took the lead in the second half when Santiago Alvarez stretched over for a crucial score.
It took Fiji some time to get going in the second half, but when they did they scored two quick tries to level the scores and then take the lead.
In the end, Fiji won 21-14
Fiji 21-14 Argentina
USA 26-0 Brazil
Argentina 17-14 USA
(Australia, France, South Africa, Spain)
Australia made a blistering start in their match with Spain when John Porch scored a try in the opening seconds of the match.
However, Spain was not about to lie down and hit back with two tries of their own to take a five-point lead. Australia did eventually go into the half-time break with the lead when Jesse Parahi dotted the ball down for his team's second try.
Spain continued to put up a fight in the second half, but Australia scored another two tries to win 26-12.
In the final Pool B game of the day, South Africa showed their pedigree when Justin Geduld finished off a great period of play to score his team's first try against France.
Another two tries by Albertus Smith and captain Kyle Brown gave the South Africans a comfortable 19-0 lead at half-time.
The South Africans scored one more try in the second half through Dylan Sage to wrap up an impressive 26-0 victory.
South Africa 26-0 France
Australia 26-12 Spain
France 31-14 Australia
South Africa 24-0 Spain
(Great Britain, Kenya, New Zealand, Japan)
Great Britain started well scoring two tries before Japan got a try of their own just before half-time for a 14-7 scoreline.
Japan upped the tempo in the second half and they were rewarded when Katsuyuki Sakai barged over for a converted try to level matters.
Great Britain regained the lead late in the game with a Marcus Watson try, but Japan had one last opportunity to try and level matters again before full-time.
And they almost did it when Lomano Lemeki went over for a score. However, Kameli Soejima could not convert, giving Great Britain a 21-19 win.
In the Pool's other Round Two game, Kenya made life tough for New Zealand when Collins Injera raced away for the game's first try.
However, Injera went from hero to villain when a head high tackle near the Kenyan tryline gave New Zealand a penalty try and Injera was yellow carded for the indiscretion.
New Zealand took full advantage of the extra man with Akira Ioane going over for a score. At half-time, NZ were leading 14-5.
Play in the second half was very physical, which suited the New Zealanders and tries by Augustine Pulu and Lewis Ormond secured a good 28-5 win for them.
New Zealand 28-5 Kenya
Great Britain 21-19 Japan
Great Britain 31-7 Kenya
Japan 14-12 New Zealand
Day Two fixtures:
(Kick-off is local time - GMT plus three hours)
France v Spain - 11.00
South Africa v Australia - 11.30
Kenya v Japan - 12.00
New Zealand v Great Britain - 12.30
Argentina v Brazil - 13.00
Fiji v United States - 13.30