South Africa is in a strong position after bowling Australia out for a below-par score, when fast bowler Rabada took 5-96 before padding up and helping South Africa see out the last few overs of the first day with the bat. Mitchell Marsh was caught behind for four, Pat Cummins' castle was destroyed first ball, and Mitchell Starc was bowled for eight.
The 22-year-old fast bowler completed his eighth "fifer" in just his 28 Test when bowled Mitchell Starc with teh seamer now standing on 129 wickets at an average of close to 22.
Pat Cummins was the successful Australia bowler on the second morning when he bowled Rabada for his second wicket of the innings. Rabada, following up on his bowling heroics, helped South Africa with 17 not out as nightwatchman.
It was a day of contrasts.
Overcast conditions on a pitch with a healthy grass cover meant the tourists scored just 23 runs in the first 14 overs as the home bowlers found prodigious movement but then Warner seemed to switch gear and, together with Cameron Bancroft, plundered 75 runs in the remaining 12.4 overs of the session. They picked off the runs after that measured start, with Warner accelerating by hitting nine fours.
It is the second time Crowe has been called into action during this series after he was forced to rule on the off-field altercation between Australia's David Warner and South Africa's Quinton de Kock.
It cut back to find the gap between bat and pad to clip the top of the off stump - it was a jaffa.
Steve Smith's decision to bat ensured his understudy was thrust into the thick of it from the outset.
In Rabada's next over Shaun Marsh was beaten by a ball which swung into his pads and was also leg before. Usman Khawaja (4), Warner, Smith (25), Shaun Marsh (24) and Mitchell Marsh (4) were out in the second session.
"After the last game it was always going to be sensitive‚" Philander added. They were saved from a worse fate when Tim Paine made 36 and put on 61 with Australia's last two batsmen. In the incident, a clearly angry Warner had to be restrained by teammates as he argued with de Kock. He finished the day with 3-51 off 13.3.
When Australia fielded, Warner appeared to be his normal talkative self.