The Wallabies have made significant changes to their lineup for Saturday's Rugby Championship clash against South Africa in Perth, following a heavy 33-7 defeat last week. Veteran winger Marika Koroibete returns to the starting side, replacing the injured Filipo Daugunu, while 19-year-old Max Jorgensen is set to debut from the bench. Coach Joe Schmidt emphasized the need for a more combative and accurate performance. Nic White replaces Jake Gordon at scrum-half, and Angus Bell returns from injury to strengthen the front row. South Africa has made 10 changes to their squad, aiming to build depth for future competitions.