The Springboks' unpolished victory last week should serve as an ominous warning to the English ahead of the second Test in Johannesburg on Saturday.
As Bok coach Heyneke Meyer reminded the fans this week, the national side was far from the complete package.
Meyer, however, knows that last week's defeat would only have strengthened England's resolve.
"The players still need to play and arrive and be mentally tough going into the game," said Meyer on Friday.
"We are looking forward to the match and we are very motivated for the second Test and we know it is going to be a great battle.
"We have to go out there and prove that we want to be the best team in the world."
It would have been unfair to have expected a flawless performance from the Springboks with Meyer effectively only having three days to rally his troops.
He has now had an extra week to iron out problems and expected greater accuracy from the players.
Meyer made only one injury-enforced change to his run-on side, with Patrick Lambie being a more than capable replacement for Zane Kirchner at fullback.
Lambie will give South Africa an extra edge in both attack and defence.
England ring the changes
In comparison, England's coach Stuart Lancaster made five changes to his side having been dealt a blows with the injuries to centre Brad Barritt and fullback Mike Brown this week.
"I think England is a quality side and I have a lot of respect for their coaching team and England," Meyer said.
"Every game is a test match that, is why they call it a Test match.
"We know we need to be well prepared and keep our feet on the ground and be very focussed."
Meyer, this week, said the English matched his charges in a number of facets in Durban and expected much of the same on the weekend.
"You are only as good as your opposition and I thought England was great at the breakdown and it was difficult to get quick ball from them," he said.
"They really played well in the first half and we struggled to get quick ball and we struggled to get our game plan going."
The Springboks could not hit their straps in the first half of the first Test, but turned the tables in the second half.
Meyer said he expected an improved performance from his side and hoped they would play as well as they did in the second half, for the entire match.
"You have to grind down opposition and you have to play tactically and hope the holes open up in the second half," Meyer said.
"We obviously want a great start and play for the whole 80 minutes."