On the fourth day of the Test match, the Australian cricket team struggled significantly against the South African bowling attack, resulting in a total score of 99 runs. The collapse of the Australian batting lineup allowed South Africa to enforce the follow-on, a tactical decision that requires the team that batted first to bat again immediately due to a substantial deficit in runs.

Marco Jansen was a central figure in the South African performance, delivering a bowling spell that proved difficult for the Australian batsmen to counter. The result marks a notable shift in the series, as South Africa continues to build on a comeback effort following earlier challenges. The match remains ongoing, with Australia now tasked with attempting to recover from the deficit in their second innings. While the performance of the Australian side was described as a collapse, the focus remains on the effectiveness of the South African bowling unit in restricting the scoring opportunities throughout the day.