Wales have defied a horrendous run of injuries to win their three World Cup pool games so far and shore up a quarter-final berth with their last pool game to go against Australia on Sunday AEDT. 
But former Wallabies flanker Phil Waugh suspects the Red Dragons still lack the inner belief they will need to beat the Wallabies and "win big games back-to-back" in the knockout rounds to come.
Waugh credits Wales, who have claimed wins over Uruguay, England and Fiji, as a team that has been well led by Sam Warburton and coached by Warren Gatland, who has been critical of the way tournament organisers arrived at World Cup pool draws .
He also expects Wales to put up a mighty fight against Australia at Twickenham, as they always do even though they have lost to the Wallabies in their past 10 meetings.
However, and notwithstanding their courage and ability to play and score points when on song, Waugh still senses a lack of assuredness among the Welsh compared with the Wallabies.
That is despite the boost they will have got from beating England, as Australia did last Sunday AEDT.
"They have a strong culture and are led well by Warburton. Gatland is obviously a strong coach," Waugh said of Wales from London where he is attending the World Cup.
"But I question whether they genuinely believe they can win back-to-back. I don't necessarily think, underneath it all, that they believe they can win big games back-to-back. I also saw that with England."
On the other hand, Waugh, who played 79 Tests from 2000 to 2009 and in the 2003 and 2007 World Cups, believes the Wallabies genuinely believe they can win.
He says that was not just shown by how they beat England 33-13 but how they responded to the win afterwards.
"I reckon they are in a good mental state. You can see them after the game," Waugh said. "They weren't surprised by the result, whilst the English would have been surprised.
"They will park that [win] and move on to Saturday. They are in a good spot."