No way will Cheika rest players for this game.
I don't know why people are negative about Wales..Have they done any research? Wales are so much better than people realise, despite the injuries which haven't stopped them getting 3/3 wins this rwc.
Their strengths are they are a closely knit team, they are incredibly fit and play for 80 minutes, they know how they want to play (unlike england), they have hugely talented and skilled players in the forwards and backs and they have a lot of self belief, especially after doing england in the other week. And don't forget Warren gatland, a great coach who knows how to win tough games.
I believe the Wallabies will win but it's going to very tough and close, 3 points. This will be Great game by 2 great rugby teams.