Warren Gatland says he feels referees are not giving Wales the decisions they deserve during the Autumn Internationals.
Wales take on Australia in the final game of the series tomorrow.
A defeat would leave them out of the top eight in the world rankings and facing the prospect of a difficult draw for the next World Cup.
"This weekend's game is going to be big on several different levels" says former Welsh international Rhys Williams.
"We need a win to boost confidence within Welsh rugby. It's been a been a disappointing autumn campaign, and no one feels it more than the players."
More top news
Aaron Ramsey says Wales can exploit England's weaknesses when the two countries meet at Euro 2016.
David Cameron could call for extension of EU tariffs.
New laws come into force today to help police tackle the sale and production psychoactive substances.