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,"
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All roads lead to Cardiff on Sunday for the SSE SWALEC Finals Day at the Millennium Stadium. Cambrian Welfare tackle Ystradgynlais in the Bowl final, Ystrad Rhondda play Newcastle Emlyn in the Plate final while defending champions Pontypridd face Bridgend in the Cup final.
WRU Chief Executive Roger Lewis, Deputy Minister for Culture, Sport and Tourism Ken Skates and WRU Chairman Gareth Davies earlier this week launched a new competition in conjunction with the WRU unveiling its archive room.
Welsh players and management joined Deputy Minister for Sport Ken Skates at the Pierhead Building, Cardiff Bay earlier this week to reveal the Union's pioneering school-club hub initiative has been so successful the project will now almost double the scale of the original project.
The Scarlets, Newport Gwent Dragons, Cardiff Blues and the Ospreys look ahead to Judgement Day III which sees the Blues take on the Ospreys (2.30) and the Dragons tackle the Scarlets (4.45pm) at the Millennium Stadium tomorrow afternoon.
Ystradgynlais and Ynysddu played out a titanic struggle at Taffs Well in the SSE SWALEC Bowl semi-final. At the end of the game neither team could be separated after a 15-15 stalemate but Ystradgynlais go through on try count.
Blues strike first in JD III battle - Newport Gwent Dragons lock Andrew Coombs, WRU referee Dylan Llyr Jones and Cardiff Blues hooker Matthew Rees decide dressing room allocations for Judgement Day III
Wales Under 18 captain Calum Haggett has received a conditional offer to read Biomedical Science at St Anne's College, Oxford. WRU chairman Gareth Davies went to meet Calum and Coleg y Cymoedd Principal Judith Evans to wish him luck in his exams and pass on some of his personal experience.