Rabada had screamed in Smith's face and then made contact with a shoulder bump after dismissing the Australian skipper.
We say how in the first test things got really out of control between David Warner and Quinton De Kock. "The weather forecast says it isn't going to get too hot and I don't expect the pitch will deteriorate much".
Smith had raised eyebrows at the toss with his decision to bat in what were clearly bowling conditions, but stated that if the batsmen could get through the first hour a big first innings score is on the cards.
At the close of play, South Africa were on 39 for 1 with Dean Elgar on 11 and Rabada, the nightwatchman, on 17 from 14 balls.
Tim Paine, however, frustrated the home side by scoring 36 runs as Australia added 61 runs for the last two wickets.
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But, among the 144 pitchers who logged at least 500 innings from 2011-16, Lynn ranked 21st in FIP (3.36). Lynn declined a one-year, $17.4 million qualifying offer from St.
Speaking after day one in Port Elizabeth, team-mate Vernon Philander said it'll be a huge blow if Rabada gets suspended.
The outcome of the disciplinary proceedings is not likely to be known until the eve of the test and overshadows the build-up after a good Australian victory at Kingsmead. "I don't think anyone's read it, to be honest".
Warner told Cricket Australia's website cricket.com.au, that De Kock had made a "disgusting" comment about his wife Candice Warner.
Bancroft was out for 38 on the stroke of lunch and was quickly followed by Usman Khawaja (4) and Warner, bowled by Lungi Ngidi for 63.
Rabada was the pick of the bowlers with five wickets, while Ngidi snapped up three and Philander took two.
Four days on, the fallout from Durban and the Warner-de Kock affair continued, with Cricket Australia chief executive James Sutherland releasing a statement before play started in Port Elizabeth reminding the Australian players they needed to behave. Smith and Shaun Marsh put on 44 before Rabada's day-changing spell, when Australia tumbled from 161-3 to 182-8. Cummins also edged behind and Starc was clean bowled, with Rabada aiming a comment at the Australian as he went on his way.
Rabada found reverse swing shortly before tea and angled a length ball in at middle stump towards a shuffling Smith, who was struck on the back pad, in front of middle stump.