Bad light delayed the start of play on Day 4.

Dean Elgar and Faf du Plessis batted in a watchful manner in first half of the morning session.

Players walked off the field for a brief period due to bad light.

Faf du Plessis registered his first fifty-plus score in 11 innings.

Dean Elgar was stuck on 39 for a lengthy amount of time.

Faf du Plessis registered his 8th Test ton as South Africa piled on the lead.

Pat Cummins picked up four wickets in the second essay, bagging nine wickets in a game for the first time in his first-class career.

Morne Morkel dismissed Matt Renshaw early after Australia were set a target of 612.

Maharaj and Morkel struck once more to leave Australia reeling at 88/3.