The final squads of 12 have been announced for the ninth and final round of the 2014-15 Sevens World Series in London.
At the top an unchanged Fiji will battle it out with South Africa and New Zealand for the overall series title at Twickenham.
The Blitzboks make one change with Justin Geduld replacing the injured Cecil Afrika, a former World Rugby Sevens Player of the Year winner, while Sir Gordon Tietjens makes three changes, also losing a former winner of the coveted award to injury in Tim Mikkelson.
Following their victory at the Glasgow Sevens last weekend, Fiji head into the London Sevens in first place with Ben Ryan's side aiming to win their first Series title since 2006.
Not since 2010 has a side other than New Zealand lifted the coveted trophy, 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 World Series title as they sit third on 139.
"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," said South Africa captain Kyle Brown.
"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.
All three sides have cemented their place for Sevens' debut in the Olympic Games next year, with just one spot remaining to add an extra edge to the series finale.