The moment Japan secured a famous victory over South Africa (Video)

The 2015 World Cup has only just started, and we've already witnessed one of the greatest shocks in the history of the tournament.

Incredibly, South Africa - a genuine rugby union heavyweight - were humbled 34 - 32 by Japan. Japan will be the hosts of the 2019 tournament, a decision which drew criticism from some who didn't believe that the nation were established enough in the game to deserve such a privilege. Such a result might make a few people sit up and take notice. https://twitter.com/itvrugby/status/645295702952792064 Japan's next game will be against Scotland in Gloucester and after such an incredible victory, they may well be many people's second team for the remainder of the tournament.