Rugby World Cup contenders: Japan is wide open

This year's Rugby World Cup in Japan should be the most fiercely fought yet, with half a dozen teams a genuine chance of dethroning the All Blacks. Those teams might be backing themselves but the All Blacks are still favourites. If they take the title, they'll also make history ... no country has won three World Cups in a row. Rugby reporter Joe Porter checks out the contenders and pretenders for the World Cup title.