All Blacks captain Richie McCaw believes his side proved their World champion status after winning the Rugby Championship in Argentina.

The All Blacks ran in seven tries to win 54-15 and take a nine point table advantage with one round of games to go.

A surprisingly easy victory stretched their winning run to fifteen matches, with Tests in South Africa and Australia before November's tour of Europe.

McCaw said it was one of their best performances this season.

The All Blacks face South Africa at 3am this Sunday.

Story by: Dhanjay Deo
Source: Planet Rugby