Full-back Dane Haylett-Petty says Michael Cheika's squad rotation has kept Australia on their toes in Japan.
Jordan Petaia, 19, capped his long-awaited international bow with a try as Australia claimed a bonus-point win in Pool D.
Rebels captain and outside back Dane Haylett-Petty signed a new deal with Rugby Australia.
The Rebels only won one Super Rugby match last year, but they have already matched that tally after beating the Reds at AAMI Park.