Australia collapse to 111 all out as Simon Harmer takes 6-16 to seal South Africa series win and No.1 Test ranking

Australia suffered a humiliating final-day collapse at Newlands, losing 10 wickets for just 111 runs as South Africa completed a comprehensive series victory and reclaimed the No.1 spot in the ICC Test rankings. Chasing 288 for victory, Australia were dismantled by Kagiso Rabada and Simon Harmer, who claimed career-best figures of 6 for 16 as the visitors lost two wickets in the first over and seven before lunch. The defeat follows their 99 all out in the previous Test in Gqeberha, marking back-to-back batting failures. Nathan Lyon top-scored with 33 not out from No.10, while captain Pat Cummins defended for nearly 30 overs, underscoring the lack of resistance from the top order. Extras was the third-highest score with 16. The result echoes Australia's 47 all out on the same ground in 2011, raising serious questions about their batting depth ahead of future tours. South Africa's spin duo of Harmer and Keshav Maharaj proved decisive, with Harmer's off-spin exploiting the rough outside the right-handers' off stump. The series loss is a major setback for Australia's World Test Championship campaign and hands momentum back to the Proteas.