The Official Online RBS 6 Nations Store is open. The store has everything you need to get behind your team during the RBS 6 Nations, plus the store is now fully stocked with a much wider range of rugby merchandise.
But Marshall – who won 81 caps for New Zealand – believes Wales have what it takes to ignore history and pull of a scalp this summer.
“South Africa are a great team, they are the current world champions and we all know what pride they take in that and in the way they play,” said Marshall.
“But in Cardiff Wales are more than capable of beating the Springboks and New Zealand won’t be super-confident either – they will be slightly unsettled.
“Wales can put players out there that are key decision-makers and they have got a couple of people that can change a game.
“They are more than capable of beating any of the teams put in front of them this summer – they need to go out there and believe.”