Chasing a target of 288, Australia were bowled out for 111 at Newlands.
Chasing a target of 288, the visitors collapsed to 22/3 and then slumped to 60/7 by lunch. They were bundled out for just 111 shortly before tea, with veteran spinner Nathan Lyon (33) being the top-scorer in the innings.
Kagiso Rabada triggered the early collapse by ripping through the Australian top order. He dismissed Matt Renshaw for a golden duck, Marnus Labuschagne for 4, and Travis Head for 14. In doing so, the ace pacer claimed his 350th Test wicket.
Subsequently, off-spinner Simon Harmer completely dismantled the Australian batting line-up, registering career-best figures of 6 for 16. He finished with a 10-wicket match haul (10/120).
Australia originally held upper hand in the series-decider after posting 429 in their first innings (led by Josh Inglis's 102 and Alex Carey's 80), building a 100-run lead over South Africa's initial 329.
Coming out to bat in the third innings, South Africa turned the match completely on its head by scoring 387. Ryan Rickelton (101) and Wiaan Mulder (115) spearheaded the fightback with a spectacular 154-run partnership for the sixth wicket, putting the game beyond Australia's reach.
With this definitive win, the Proteas have dethroned Australia to reclaim the No. 1 spot in the ICC Men's Test rankings.
Cricket fraternity was full of praise for South Africa’s clinical bowling display in the final innings to win the series-deciding Cape Town Test.
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