Springbok lock and vice-captain Victor Matfield says they are more worried about where they win rather than who they beat, in this year's Tri-Nations series.

New Zealand have said that they see the matches against South Africa as a series within the Tri-Nations.

However, Matfield stressed that they are focussed on capitalising on the early home ground advantage.

"I don't think it's about a series win, I think it's about if we want to win this Tri-Nations we need to win all our home games," Matfield said.

"If you don't win all your home games, it's very tough to win this competition. We've got two more games to play at home [Wallabies next week] so this one's very important for us to keep that momentum."

Springbok assistant coach Dick Muir expects the All Blacks to come back harder in Durban on Saturday after South Africa defeated the tourists 28-19 in Bloemfontein last weekend to go top of the log.

"I think they've certainly worked it as a series and this is the game that they've targeted to win, so we know there will be a much higher level of competitiveness in this game," Muir said on Thursday.

"We've got huge respect for the All Blacks and we know it's not going to be easy this week so we'll have to be on top of our game."

Muir, meanwhile, believes Morne Steyn will have no trouble filling the boots of injured flyhalf Ruan Pienaar. Steyn, who helped the Bulls to Super 14 glory this year, comes off the bench to start in Pienaar's place in Durban.

"He's [Steyn] certainly shown his worth, particularly in the Super 14," said Muir, the team's backline coach.

"He had an outstanding Super 14 and he's one of those players who controls the game really well. He's also very balanced - he's got a good kicking game and a good running game.

"As I've said before, he can vary it quite considerably and he's really accurate at his goal kicking as well, which is a bonus for us."