Usman Khawaja steadies Australia's ship with a patient fifty.

Khawaja shifts gears on the second day after having taken as many as 83 balls for his first 20 runs.

Steve Smith in run out for 59 after having been handed a chance earlier when on 46.

Steve Smith scores his first half-century of the series.

Usman Khawaja celebrates his fifth Test ton.

Usman Khawaja of Australia shares a 137-run stand with Steve Smith en route scoring Australia's first ton of the series.

Kyle Abbott reduced Australia to 37 for 2 early on day two.

Peter Handscomb scores a half-century on debut.

South Africa fight back with quick wickets in the final session, but Australia take lead of 48. at end of day's play