Japan shock gives hope to all minnows
Japan's win over South Africa last Saturday was a momentous occasion for rugby.
It really captured the imagination, gave hope to the so-called 'minnows', and show-cased what rugby has to offer. Rugby is the best sport in the world when you see it played like that, and heart-wrenching victories expand the profile of the game.
But that wasn't a fluke - fortune favours the brave and Japan didn't beat South Africa by an intercepted pass.
They bullied them all over the pitch, put in the hard work up front, and when they could have kicked to tie the game, they backed themselves and won it.
The world rankings don't give a true reflection of the gulf in depth between the sides.
South Africa have been world champions twice and would have seen Scotland as the only pool threat.
Saturday's result showed that anything is possible in this tournament, and Argentina almost pulled off another shock, against the All Blacks a day later.
Who knows what else this great competition has to offer, but hopefully Ireland won't be left to lick their wounds after their clash with Romania.