South Africa coach Jacques Nienaber admitted he was worried about the "massive challenge" of facing the All Blacks next weekend after a "very poor" Springboks suffered back-to-back Test defeats against the Wallabies.

The world champions were outplayed "in every department" by a resurgent Australia side in Brisbane and Nienaber apologised after what he called the Springboks' worst performance since losing 32-19 to Argentina in 2018.