Following their victory at the Glasgow Sevens last weekend, Fiji head into this weekend's Marriott London Sevens in first place, with Ben Ryan's side aiming to win their first Series crown since 2006.

New Zealand lifted the coveted trophy ever year since 2011 but with Fiji on 147 points, and South Africa on 142, the four-time defending champions will have their work cut out to win a 13th Series title as they sit third on 139.

Coach Sir Gordon Tietjens has made three changes, having lost former World Rugby Sevens Player of the Year Tim Mikkelson to injury, while the "Blitzboks" have made just one with Justin Geduld replacing the injured Cecil Afrika, another winner of the coveted award.

"It would be really special to win the World Series title, most of the boys think back to the likes of Waisale Serevi 10 years ago, and we will be happy to be counted as some of the players that have lifted the Series alongside some of the legends," said Fiji captain Osea Kolinisau.

South Africa skipper Kyle Brown added: "It is a dream of every player on the circuit to win a Series title, and when you come within touching distance, it is a great place and a phenomenal feeling to have been on top for so long.

"It is disappointing to drop from top spot, but that is not something that will define us."

All three sides have cemented their place for rugby sevens' Olympic Games debut in Rio next year, with just one spot remaining.

"The HSBC Sevens World Series has continued to go from strength to strength and it’s extremely exciting that three teams are still in contention going into the final round,” said Giles Morgan, group head of sponsorship and events for HSBC Holdings.

"With the added significance that one remaining team can join Fiji, South Africa and New Zealand by achieving automatic Olympic qualification through finishing in the Series top four, it’s sure to be a fascinating weekend of Sevens."

The 13 other competing nations - Argentina, Australia, Brazil, Canada, England, France, Japan, Kenya, Portugal, Samoa, Scotland, United States, and Wales - have also named their 12-man squads.

While the Series is again being streamed live online at worldrugby.org, fans can also watch highlights on World Rugby's YouTube channel, or on worldrugby.org.

Day one of the event has already sold-out with 75,000 set to head to Twickenham, but tickets are still available for day two.

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