At the end of the first day of the USA Sevens in Las Vegas, six of the Cup quarter-final spots are still up for grabs going into the third round of pool matches on day two.
Up until the 16th and final match of the tournament - which is round four of the HSBC Sevens World Series - all eight were available, but France broke the USA's hearts with a narrow 14-12 victory to book their place in the Cup quarter-finals.
The hosts will now compete in the Bowl after an earlier narrow 19-12 defeat at the hands of Argentina, with the Pumas also progressing to the Cup and ending day one with a 100 per cent record.
Current Series leaders New Zealand and Samoa also won both of their two matches but it was defending champions South Africa that impressed the most scoring no fewer than 72 unanswered points.
Seabelo Senatla returned from injury to score four tries, while Branco du Preez and Justin Geduld both scored three tries as they beat Wales 43-0 in their first match and Canada 29-0.
Mathematically the Nelson Mandela Bay South Africa Sevens champions can still miss out on the quarter-finals, but they have all but secured a place should they lose to Kenya and Canada beat Wales.
Kenya beat Wales
Kenya, having lost 17-15 to Canada in their first match, went on to beat Wales 21-17 with Biko Adema scoring 11 points and captain Collins Injera, who was in inspired form, scoring the winning try for Paul Treu's side.
In Pool B it had looked as though the Gold Coast champions New Zealand and Dubai champions Fiji were set to qualify but Cameron Clark, returning to the Australian side from injury, stepped up to kick a winning drop goal penalty with the last play of the match to beat Fiji 22-21 and throw the pool wide open.
Forwards Sam Dickson and Scott Curry both scored in New Zealand's 31-7 win against Australia, before Tim Mikkelson added a brace and a conversion in their 26-5 defeat of Scotland as the current Series leaders look to build on their two point lead at the top of the standings in Las Vegas.
England lost to Samoa 22-19 in their first match, but 16 points from captain Tom Mitchell ensured they impressively won their second match 54-0 against Portugal in Pool C and they sit on four points alongside Portugal, while Viliamu Punivalu's side have six.
The hosts, USA, were unfortunate to lose to Argentina 19-12 in their opening match, despite an impressive try from Carlin Isles, and 14-12 against France in the final match of the day, with Les Bleus earlier beating Spain 47-0 thanks to 18 points from Stephen Paraz to progress from Pool D.
Spain, Wales, Scotland and Uruguay will join the USA in the Bowl. Uruguay, competing in their first World Series event of the Series as the only non core side, and having just booked their place at the core team qualifier in Hong Kong in March almost upset the apple cart even further in Las Vegas, leading Samoa, winner of this tournament in 2010 and 2012, 12-5 at half time before losing 17-12.