Australian under-20s rugby coach David Nucifora made 10 changes to the side that will face Fiji in their second pool game of the IRB Junior World Championship in Italy.

The Aussies go into Wednesday's (AEST) clash after a 54-7 win over Tonga while Fiji are coming off a 24-12 loss to France.

Skipper Colby Faingaa is the most notable of changes, with the brother of current Wallabies Anthony and Saia making way for fellow Brumbies backrower Michael Hooper who will captain in the No.7 jersey.

The front row has undergone a complete overhaul, with Scott Sio and Siliva Siliva joining JP Pradaud in replacing Tim Metcher, Hugh Roach and Paul Alo-Emile.

Blake Enever holds his spot in the second-row with Melbourne Rebels' lock Luke Jones replacing Waratahs' Academy forward Greg Peterson.

Jarrad Butler, who started the game against Tonga at blindside flanker, has been shifted to No.8 to replace former Australian Sevens star Ed Quirk, with Western Force flanker Ted Postal named to start at No.6.

Sydney University halfback, Eddie Bredenhann, has replaced Queenslands' Matt Lucas with five-eighth Ben Volavola one of just five players retained from the 47-point victory at Stadio Mario Battaglini.

Australia U20s (15-1): Jacob Woodhouse, Damon Anderson, Tom Kingston, Simon Morahan, Kimami Sitauti, Ben Volavola, Ed Bredenhann, Jarrod Butler, Michael Hooper (capt), Ted Postal, Luke Jones, Blake Enever, JP Pradaud, Siliva Siliva, Scott Sio. Res: Hugh Roach, Paul Alo-Emile, Greg Peterson, Ed Quirk, Matt Lucas, Bill Meakes, Rohan Saifoloi.

Brought to you by AAP © 2024 AAP