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."
The Welsh Rugby Union has announced a major new sponsorship deal with Gullivers Sports Travel which will make the UK's leading, and longest established, multi-sport tour operator, an Official Supplier for the rest of the decade.
Having taken part in seven World Cups as a player and coach, Liza Burgess hopes to go out in style this afternoon when Wales take on Australia in the Play-off for seventh and eighth place in the Women's Rugby World Cup in Paris.
WRU Head of Rugby Josh Lewsey met with volunteers across the game earlier this week, championing their role in the sport. He was joined by Wales captain Sam Warburton for part of the day as volunteers took part in a 'Try Out' event for the 2015 Rugby World Cup
Wales Women may not have got the results they wanted recently on the field, but off it they have made massive strides in strength and conditioning - and that is in no small part due to S&C coach Sam Dodge.
Two weeks into the new pitch project at Millennium Stadium, Groundman Craig Campbell takes staff on a unique behind-the-scene tour of the works so far and National Squad Assistant Strength and Conditioning Coach John Ashby and Tour Guide Peter Owen describe what the revamp means for them.
Try-scorer Jenny Davies and fellow prop Megan York reveal to WRU TV's Graeme Gillespie their thoughts after Wales broke their drought in the Women's Rugby World Cup with a 35-3 win over South Africa in Paris.
Wales Women are expecting a tough battle against South Africa on Saturday as both teams seek their first pool win of the Rugby Women's World Cup. WRU TV's Graeme Gillespie talks to head coach Rhys Edwards and lock Jenny Hawkins.
Wales' Sam Warburton took a group of employees from Admiral on a behind the scenes tour of the Millennium Stadium and WRU TV tagged along to bring you a snippet of what it's like for the players on match day