Australia U20s coach Chris Whitaker has made several changes as they look for the Rugby Championship U20s title against Argentina on Sunday.
The Aussies sit in second currently, with a win over Argentina and a South Africa victory over New Zealand handing them their maiden title.
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The Kiwis are currently one point ahead on the ladder after a thumping victory over Los Pumitas.
Hooker Lipina Ata gets his first start of the tournament after scoring in last week's victory over South Africa.
Ata is joined by Trevor King and Kaleb Ah-Colt in the front-row, with Joe Mangelsdorf and Eamon Doyle unchanged in the second-row.
Tom Robinson, son of former Wallaby Brett, comes into the back-row for his first appearance in South Africa.
Reds teammate Charlie Brosnan and Waratah Toby Brial round out the forward pack.
In the backs, James Martens and Joe Dillon form a new-look halves partnership.
Shane Wilcox comes on the wing after featuring in the draw against the New Zealand.
Liam Grover also comes back into the midfield with Boston Fakafanua, with Xavier Rubens moved to the wing.
Waratahs duo Charlie O'Kane, Nick Hill and Edwin Langi make up the forwards reserves alongsides Brumbies Ollie Aylmer and Beau Morrison.
Hwi Sharples and Joey Fowler will finish the game, with Cooper Watters named to complete the 23.
Australia U20 vs. Argentina U20
Nelson Mandela Bay Stadium, Gqeberha
10pm AEST Sunday 11 May
1. Trevor King (Queensland Reds, Souths)
2. Lipina Ata (ACT Brumbies, Gungahlin Eagles)
3. Kaleb Ah-Colt (NSW Waratahs, Randwick)
4. Joe Mangelsdorf (NSW Waratahs, Sydney University)
5. Eamon Doyle (c) (NSW Waratahs, Sydney University)
6. Charlie Brosnan (Queensland Reds, Brothers)
7. Tom Robinson (Queensland Reds, University of Queensland)
8. Toby Brial (NSW Waratahs, Eastern Suburbs)
9. James Martens (Queensland Reds, GPS Rugby Club)
10. Joe Dillon (ACT Brumbies, Canberra Royals)
11. Xavier Rubens (Queensland Reds, Souths)
12. Boston Fakafanua (Western Force, Wests Scarborough)
13. Liam Grover (NSW Waratahs, Sydney University)
14. Shane Wilcox (ACT Brumbies, Tuggeranong Vikings)
15. Sid Harvey (Australia Sevens)
Replacements
16. Charlie O'Kane (NSW Waratahs, Eastern Suburbs)
17. Nick Hill (NSW Waratahs, Warringah)
18. Edwin Langi (NSW Waratahs, Eastern Suburbs)
19. Ollie Aylmer (ACT Brumbies, Gordon)
20. Beau Morrison (ACT Brumbies, Sydney University)
21. Hwi Sharples (NSW Waratahs, Sydney University)
22. Joey Fowler (NSW Waratahs, Sydney University)
23. Cooper Watters (NSW Waratahs, Eastern Suburbs)
