Set a target of 288 runs to win, Australia collapsed to 111 all out. Spinner Simon Harmer was the chief destroyer, returning career-best figures of 6-16, while Kagiso Rabada claimed 3-39, including the milestone 350th Test wicket of his career.

The defeat prompted sharp criticism from former Australian opener David Warner, who described the team's performance as "un-Australian" and "disgraceful." Warner highlighted the lack of fight shown by the visitors during their final-day pursuit of the target.

Australia's chase began disastrously in the first over of the day. Kagiso Rabada removed Matt Renshaw and Marnus Labuschagne in quick succession, leaving the tourists reeling. Travis Head also fell to Rabada, further compounding the pressure on the middle order.

The situation worsened when Josh Inglis was run out following a mix-up with Cameron Green. Harmer then exploited the conditions, dismissing Alex Carey and Cooper Connolly to leave Australia at 60-7 by the lunch interval, effectively ending their hopes of victory.

Following the break, Australia adopted a defensive approach, with captain Pat Cummins facing 40 deliveries before scoring a run. However, the resistance was short-lived as Harmer continued to weave his web, eventually claiming the final wicket to seal the win.

South Africa's victory was built on the foundation of centuries from Ryan Rickelton and Wiaan Mulder, who batted throughout the fourth day to set up the challenging target. Their efforts ensured the Proteas regained the top spot in the world Test rankings.

The result marks a significant setback for Pat Cummins' side, who now face a challenging schedule. Australia are set to host New Zealand for a four-Test series starting in December, followed by a five-Test tour of India.

The series loss raises questions regarding the composition of the Australian batting order, particularly following the struggles of Marnus Labuschagne, who has now gone 49 innings without a century. The team will look to regroup before the New Zealand series.

Brief scores: South Africa 329 & 387 (Wiaan Mulder 115, Ryan Rickelton 101) beat Australia 429 & 111 (Nathan Lyon 33*; Simon Harmer 6-16, Kagiso Rabada 3-39) by 176 runs.

The tournament, which aims to identify young cricketing talent across the country, saw high-scoring encounters and impressive bowling spells at various venues throughout the city on Friday.

At the Jinnah College Ground, Falcon Grammar School secured a 53-run victory over Army Public School. Falcon Grammar posted a total of 273 runs, led by Ayan Ahmed’s 80, Ezaan ur Rehman’s 50, and Ammar Nazeef’s 45.

Azaan Ahmad was the standout performer for Falcon Grammar with the ball, claiming six wickets for just 24 runs. Army Public School was eventually dismissed for 157 in 30.3 overs, despite an unbeaten 32 from Azaan Ahmad.

In a closely contested match at the IBA University Ground, Evergreen School edged past St Paul English School by eight runs. Evergreen were bowled out for 160, with Muhammad Sahil top-scoring with 63 runs.

St Paul English School fell just short of the target, finishing on 150 all out in 34.3 overs. Muhammad Nihal proved instrumental for Evergreen, taking three wickets for 20 runs to stifle the chase.

The City School Network recorded a comfortable six-wicket win against Sun Rays Academy School. Sun Rays posted a competitive 208, driven by a brilliant 119 from Mehdi Jaffri, which included 14 fours and two sixes.

The City School Network chased down the target in 33.2 overs, finishing on 210 for four. Shayan Jaffri anchored the pursuit with an unbeaten 105, while Anas Jaffri provided valuable support with 38 runs.

The PCB Talent Hunt Programme continues to serve as a vital platform for school-level cricketers to gain competitive experience. Organisers noted the high standard of play displayed by the participants throughout the day's fixtures.

The tournament remains a key initiative for the Pakistan Cricket Board in its efforts to broaden the talent pool for future domestic and international representation by identifying promising youngsters at the grassroots level.