Sean McMahon will start for the Wallabies when they face Wales in the Pool A decider this Sunday.
McMahon comes in for Vice-Captain Michael Hooper who was suspended for an act of foul play in their match against England.
Lock Dean Mumm joins Kane Douglas in the Wallabies’ second-row with Rob Simmons dropped.
Joining him in the starting 15 is winger Drew Mitchell who is Australia’s most prolific World Cup try scorer with 12.
He replaces the injured Rob Horne.
Star backs Israel Folau and Matt Giteau have overcome ankle and rib injuries and will start in their respective positions.
The All Blacks face Tonga at 7am tomorrow while the Wallabies clash with Wales at 3.45am Sunday.
Wallabies side to face Wales:
1. Scott Sio (13 Tests)
2. Stephen Moore C (98 Tests)
3. Sekope Kepu (59 Tests)
4. Kane Douglas (19 Tests)
5. Dean Mumm (40 Tests)
6. Scott Fardy (26 Tests)
7. Sean McMahon (5 Tests)
8. David Pocock VC (52 Tests)
9. Will Genia (62 Tests)
10. Bernard Foley (23 Tests)
11. Drew Mitchell (66 Tests)
12. Matt Giteau (98 Tests)
13. Tevita Kuridrani (27 Tests)
14. Adam Ashley Cooper VC (110 Tests)
15. Israel Folau (35 Tests)
Reserves
16. Tatafu Polota Nau (57 Tests)
17. James Slipper (70 Tests)
18. Greg Holmes (20 Tests)
19. Rob Simmons (56 Tests)
20. Ben McCalman (43 Tests)
21. Nick Phipps (35 Tests)
22. Matt Toomua (28 Tests)
23. Kurtley Beale (56 Tests)
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