Wales won their first Grand Slam in 27 years this year but have suffered record defeats to New Zealand and South Africa this month. They even needed a late drop goal to beat lowly Fiji and have scored only two tries in the three games. But Thomas still believes his injury-ravaged team can salvage some pride by beating the Wallabies in Cardiff on Saturday.
"With the way things have gone this Autumn the players realise this is their last chance to put things right," said Thomas. "We wanted to play against these big teams to test ourselves but we feel we are better than this. The only way to move forward is to get a victory - that is more important to us than anything.
"We have dug in and shown improvements from each game but we know we need to cut out the errors that have been costing us so far.
"We're not looking for excuses but we've had a lot of injuries and new combinations this month and our preparation hasn't been ideal. But come Saturday, if we perform well, everything that has gone on before will be forgotten. I'm sure we can win."
The slump in form has seen Wales drop to sixth in the world rankings while Australia regained their place in the top three with an emphatic victory over Ireland in Dublin. That win ended their own miserable run of seven successive defeats while Wales have not beaten the Aussies since 1987.
Thomas added: "Australia have had a tough year but you can never write off a team like the Wallabies. They have been a top three team for the last ten years."
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.
Dodgy tattoos, carthorses, Avatar and soft chins are revealed by Wales Sevens players Tom Williams and Sam Cross as they profile the Wales Sevens squad taking part in Hong Kong this weekend in the latest round of the HSBC Sevens World Series.