Australia vs South Africa 1st test gallery
Jean-Paul Duminy trapped Usman Khawaja plumb in front three short of his century.
Usman Khawaja batted purposefully in the morning session as he headed towards a second innings century.
Australia's pitch at 5th day
The cracks on the WACA surface had widened significantly on the fifth morning when the umpires came to inspect.
Kagiso Rabada gave South Africa's victory push an early kick by dismissing Mitchell Marsh LBW via a controversial DRS call.
Kagiso Rabada 5 fer
Kagiso Rabada had Mitchell Starc LBW to complete his five-fer.
Peter Nevill and Josh Hazlewood frustrated the South African in the second session with a half-century stand as edges dropped short or flew away from the close-in fielders.