South Africa captain Faf du Plessis says his side could target David Warner with the aim of getting the Australian suspended in the second Test.

Sledging dominated the narrative of the first clash, with tempers rising as the situation escalated amid a confrontation between Warner and the Proteas' Quinton de Kock on day four.

Both players were charged, leaving Warner just one demerit point away from suspension as he takes part in the second Test – and Du Plessis hopes to take advantage of that.

On the possibility of winding Warner up, he said on Thursday: "I didn't think of it before the series but I did hear that yesterday and it's probably being a little bit smart by being like that.

"If you can entice someone to make a mistake to get them missing the rest of the series, that's probably a tactical move.

"But before we came into the series when I looked at all the demerit points, all of it was on the South African team's side. There wasn't much on the Australian team.

"Now that it's happened, it's a possible angle we can look to get to."

Following that heated showdown last time out, Du Plessis also expects that Australia will continue to sledge in Port Elizabeth.

"They are a team that's always done it and will always do it," he added. "They're not going to change that overnight.

"They've always had characters within their team – and it's not even the whole team, it's probably just two or three guys. You could almost see that's their job in the team, to go that route.

"For me, it will be just to make sure that, if you have guys in your team that are pushing the line, as a captain, you make sure you can keep them calm and let things get to the stage where they got to in the previous game."

Australia won the first Test by 118 runs after just four overs of the fifth day in Durban.