Australia close in on victory against South Africa

Australia declared their second innings at 314-6 on day four, putting South Africa in a difficult position. Matt Renshaw, returning from a three-year absence, contributed 82 and dismissed South Africa's captain Temba Bavuma with his off-spin.

Pat Cummins set up the dismissal of Tristan Stubbs with a well-timed delivery, leaving South Africa at 102-4 at the close of play. The Proteas now need 319 runs to avoid defeat.

South Africa's hopes rest on Aiden Markram, who scored 45 not out. Markram's innings included a stand of 66 with David Bedingham, though the pitch appeared to offer little resistance.

Markram has faced 313 deliveries from Nathan Lyon in Tests without being dismissed, a factor that could aid his side. However, the odds are stacked against South Africa, as only twice in the past 13 years has a team survived 140 overs to save a Test.

Australia may also be missing the fielding of Steve Smith, who was hit on the helmet by a bouncer and spent time off the field. The tourists are now looking to bat out the final day to secure a statement win.

Whether bad light returns on the final day could influence Australia's decision to bat until tea. The match remains in the balance, with South Africa needing to perform at their best to avoid a heavy defeat.