A visibly disappointed Springbok prop Ox Nche said the hosts have to bounce back strongly next week to get their Rugby Championship campaign back on track.
Coach Rassie Erasmus admitted the Springboks were "really awful" in their unexpected defeat to the Wallabies in their Rugby Championship opener at Ellis Park.
The Wallabies ended 62 years at Ellis Park without a victory after coming from 22 points down to defeat the Springboks 38-22 in a stunning upset result.
Springbok captain Siya Kolisi says he'll make subtle adjustments but intends to approach the No 8 role in Saturday's Test against the Wallabies with the strengths that have come to define his game.
Japan head coach Eddie Jones believes Springbok scrumhalf Grant Williams is the fastest No.9 in the game.
Springbok coach Rassie Erasmus named an exciting team for their opening Castle Lager Rugby Championship match against Australia at Ellis Park on Saturday.