Herschelle Gibbs says he is enjoying a new role batting at four, which has coincided with South Africa's upturn in fortunes against England.
"It's a new position for me and I'd like to make it my own," said Gibbs, who scored 100 in Sunday's victory.
"It's nice to be part of three 100 partnerships in the last three games and hopefully there a few more to come.
"Our middle order is still a bit inexperienced and that's obviously the reason why they wanted me down there."
Home skipper Graeme Smith believes his side is coming together after winning back-to-back games for the first time in a year.
South Africa's selectors have named an unchanged squad for the last three matches of the series, with the next in East London on Wednesday.
"The whole team is starting to perform well and is stepping up when needed," said Smith, whose side is now 2-1 up in the series.
"It was a good all-round performance and that's starting to happen more and more often."