Wales were unable to break the shackles against Samoa, losing 26-0 at George.
Wales have replicated last week's performance in the second round of the IRB Sevens Series by recording one victory from their three pool games in George, South Africa.
Paul John's men faced the unenviable task of facing last weekend's finalists Samoa and eventual tournament winners in Dubai, New Zealand, in Pool C and came up short on both occasions. A narrow victory against the fast improving USA provided Wales with some consolation on a tough day's rugby at Outeniqua Park.
Chris Morgan stormed over for Wales's first try in the fourth minutea gainst USA to give Paul John's side a 5-0 lead.
The dogged Americans then hit back through Mile Pulu and with Nese Malifa adding the conversion USA had hit the front with a slender 7-5 lead.
Justin Tiperic was then sent to the sin-bin to reduce Wales to six men late in the first half.
Jevon Groves raced over to regain the lead for Wales before it was USA's turn to lose a man when Malifa received a yellow card.
Pulu scored his second try of the match before Ifan Evans restored the lead with a five pointer as Wales edged ahead 15-12.
The Samoans, already buzzing after beating New Zealand in their opening game, dominated from the outset to claim a comfortable 26-0 victory.
Captain Lolo Lui and Reupena Levasa were the heros for Samoa. Lui bagged a try and knocked over three conversions while Levasa raced over for a brace of tries. Samoa led 12-0 at the break and rubber stamped their authority in the second half with tries by Afa Aiono and Levasa.
Wales then had to overcome New Zealand to reach the main draw on day two but despite being in the hunt at halftime, the Kiwis stormed away in the second half to win 17-10.
Zac Lawrence and Ashley Beck traded tries in a keenly contested first half but the Kiwis clinical finishing proved crucial in the second spell.
Sherwin Stowers scored twice to put the pool favourites ahead before Wales finished strongly through Alex Cuthbert.
Wales squad: Lee Rees, Chris Morgan, Gareth Davies, Nicky Thomas, Lloyd Williams, Ashley Beck, Ifan Evans, Craig Hill, Alex Cuthbert, Justin Tiperic, Chris Davies, Jevon Groves
Wales Head Coach Rob Howley talks to WRU TV's Sebastian Barrett about the 36-man squad he has just named for the forthcoming Under Armour series, which includes two uncapped players, Ospreys duo Sam Davies and Rory Thornton.
Head coach Rowland Phillips is deligthed he can now call BT Sport Cardiff Arms Park home for his Wales Women's side, who launch their international season next month with games against Scotland and UK Armed Forces in the heart of the capital city.
Wales Sevens star Sam Cross has put his home town club of Brynmawr on the map after winning a silver medal at the Rio Olympics with Team GB. His club have now honoured him by naming their players bar after him, as WRU TV discovered at the official launch, recently.
One of the newest members of the Principality Premiership, Bargoed admit it's proving to be a steep learning curve at the highest level, but are determined to become a force to be reckoned with. WRU TV visited the club last weekend when they took on Llanelli.
Table-topping Aberavon travel to north Wales to tackle RGC 1404 as both teams defend unbeaten starts to the season in the Principality Premiership. WRU TV's Graeme Gillespie visited the Wizards to see how their preparations were going for the game of the weekend.
The Half a Game initiative is currently sweeping across Wales and proving a major success. The scheme aims to give every young player at least half a game every weekend. WRU TV recently visited a festival in Narberth where clubs have fully embraced the initiative.
Both Bargoed and Swansea were seeking their first win of the Principality Premiership season this afternoon. It proved a fruitful day for the hosts - not only did they win, but Bargoed claimed a try bonus point.
Cardiff managed to keep their unbeaten record at home intact, but only just as Bridgend made them work extremely hard before the Blue and Blacks secured a hard fought Principality Premiership win at the BT Sport Arms Park last night.
Former Wales back row Andy Powell gives a guided tour of The Wern, home of Merthyr RFC, who are determined to prove a lot of people wrong and make their mark in their first season in the Principality Premiership.