SPRINGBOK flyhalf Morne Steyn believes their good week of training helped them to overcome New Zealand in the Tri-Nations Test in Durban on Saturday.

SPRINGBOK flyhalf Morne Steyn believes their good week of training helped them to overcome New Zealand in the Tri-Nations Test in Durban on Saturday.

Steyn, who replaced injured Ruan Pienaar in the starting XV, dominated a kicking contest as South Africa earned a 31-19 victory over New Zealand - the first time the Boks have won successive Tests against the All Blacks at home in 33 years.

The flyhalf single-handedly stole the advantage from the All Blacks shortly before half-time and the hosts never relinquished it as they stretched their lead at the top of the Tri-Nations log with two wins from as many games.

"It was a good week at training and it was just one of those days where everything went through the poles, which was great," Steyn said after scoring all 31 points, a Tri-Nations record.

Meanwhile, passionate New Zealand rugby fans turned on the All Blacks yesterday after an error-filled performance saw them crumble against the Boks for a second consecutive week - they lost 19-28 a week before.

Talkback radio shows ran hot with callers rating the All Blacks performance inept and demanding the sacking of coach Graham Henry and his co-coaches.

The back-to-back defeats have underlined the South Africans as favourites in this year's Tri-Nations championship and they have also moved ahead of New Zealand at the top of the world rugby rankings.

"Luckily the South African's have no idea how to use the ball else it would have been a 30-point margin," said Keith on Stuff.co.nz.

"How dumb do you really have to be to be an All Black nowadays?"

Rugby Heaven website columnist Marc Hinton said it was "dreadful stuff" from the All Blacks who were the architects of their own doom.

All Blacks captain Richie McCaw gave credit to their opposition, whom he referred to as one of the best sides he has played against. - Sapa/AFP