Assistant coach Sean Holley has warned the USA Eagles to expect a clinical performance from Wales in the Chicago encounter.
He has urged his team to be more ruthless in attack and defence than they were in their 32 points to 23 victory over Canada a week ago.
He said:"We want to put on a show for the people back home and the people who have travelled out here to see us play.
"We are looking for a good performance to round off the tour and the season. We are expecting a much more clinical performance this week and we need to be a lot more ruthless in attack and defence."
The Wales defence coach warned against complacency saying home advantage will help the USA Eagles mount their offensive.
He explained:"We are really looking to focus on ourselves in the light of the improvements we know are needed from last weeks performance.
"The Chicago pitch is a lot wider which offers more open space and that suits our style of play. The boys were impressed with the stadium and now they just can't wait to get out there and play rugby."
He also spoke of the valuable lessons he has learnt from his first experience within the Wales national coaching team. "I have learnt a lot and a lot of what goes on here is about attention to detail," he said. "If you get the detail right you reap the rewards, but if you get it wrong you face the consequences."
The Wales caretaker defence coach said he valued the opportunity the tour had given him to concentrate on one facet of play. He concluded "I have definitely learnt things which will help me when I go back to the Ospreys after this,"
Wales and Ospreys back row James King, who came through the North Wales age grade system, nominated North Wales Regional Community Rugby Manager Marc Roberts, in the WRU's 'Diolch' initiative where squad players thanked those who played a part in their rise to the top.
Beating Merthyr has boosted Carmarthen Quins hopes of reaching a top eight spot in the Principality Premiership. Quins captain Haydn Pugh is delighted with his team's progress and is determined that everyone from the Under 6s through to the senior team, enjoys the ride.
When the Wales squad were asked to nominate individuals who played a big part in their early playing days, Wales and Dragons full back and wing Hallam Amos thought of his former Monmouth School rugby coach John Bevan.
Sam Cross and Luke Treharne have been named as co-captains of the Wales Sevens side as head coach Gareth Williams names his 12-man squad to play in the first leg of the HSBC World Series in Dubai next weekend.
Bedwas head coach Steve Law and players Nicky Griffiths and Alun Rees extol the virtues of the close knit club as they prepare to host third place RGC 1404 - who are one place head of them on the Principality Premiership points table - on Saturday.
Many of the Wales squad have said Diolch (thank you) to someone who played an important part in their early playing days by nominating them to be invited to the Wales v South Africa match. One person, Gowerton Comprehensive geography teacher Mr Dean Mason was nominated by two of his former pupils, Dan Biggar and Sam Davies.
The second WRU disability rugby pilot has been delivered, this time in Caerphilly schools, culminating in a festival at the Caerphilly Centre of Sporting Excellence, Ystrad Mynach tomorrow. Plans are in place to set up a Disability Rugby Club in Newbridge to provide long-term playing opportunities.
WRU TV: Hear from inside the Wales camp as Neil Jenkins discusses this weekend's clash with South Africa and how the squad are looking to put in a strong performance to round of the 2016 Under Armour Series