Wales left the Adelaide Oval empty handed are eventual finalists USA handed them a 12-10 defeat in the quarter-finals of the IRB World Sevens series.
USA, who shocked England in their pool clash to make the knockout stages, showed patience, power and pace to repel the challenge of Wales. Wales were still in the hunt at halftime, thanks to a Darren Daniel try which restricted USA's lead to 7-5 after Marco Barnard scored an early converted try.
Wales hit the lead early in the second spell after USA were reduced to six players. Rhys Jones touched down and banged over the conversion to give Wales a 10-7 lead.
Wales held their lead until Zachary Pangelinan pounced to score in the ninth minute to rock Welsh hopes of reaching the semi-finals.
Wales then produced a flat performance in the semi-final of the Plate competition against South Africa to go down 29-0.
After five legs Wales are currently in 10th place on the points table with 24 points with New Zealand leading the way with 96 points, followed by the Adelaide winners Samoa who have accumulated 94.
Wales now head to Hong Kong for the next leg where they have drawn England, Japan and Hong Kong.
As the countdown continues for RWC2015, Tournament Chief Executive Debbie Jevans visited the Millennium Stadium to discuss preparations for the eight matches and reveal the positive news that 100,000 tickets for games at the home of Welsh rugby have sold in the last seven days.
Jason Harries is targeting a first win on the World Series circuit this season with Wales. The series returns to action this weekend in Dubai where Harries is part of a team hoping to build from its efforts in round one in October.
Wales skipper Jevon Groves says his side have addressed a few points from Gold Coast and aim to 'hit the ground running' in the next two rounds of the World Series, kicking off with this weekend in Dubai before heading off to South Africa next week.
Wales Sevens manager Steff Thomas is hopeful his side can build from a quarter-final spot in the opening round of the World Series in Australia when his side take part in the forthcoming double header in Dubai and South Africa.