New Zealand rugby captain Richie McCaw helped the Duchess of Cambridge Kate Middleton to coach a 'Rippa Rugby' team during her visit to Dunedin.

The Duchess and her husband Prince William have been participating in a number of activities on their three-week royal tour of the country.

Over the weekend, McCaw was on hand to help the royal couple go head to head with a team of youngsters, and it was Prince William who came on top with his group of 10.

McCaw ended up on the losing team after giving his support to the Duchess.