Spain will dread red tide

Pat Nevin BBC Radio Five Live summariser

Spain must be looking ahead to their quarter-final clash with South Korea and dreading this great red tide on the horizon.

The encounter will be a great game, though, between two good sides simply determined to win.

Korean fans gather for a session of collective hysteria

It will be very tight - though oddly enough I have seen more weaknesses in the Spanish side.

When they get rattled they look vulnerable and Korea will rattle them, make no doubt about that.

The heat may well be a factor too as Spain are used to playing in the evenings, but they have had a couple of extra days to recover.

But Korea are probably the fittest side at this tournament.

That probably counts for a lot, as their players are playing in a less competitive league and come into this tournament fresh.

Going forward they are always a threat and they just keep coming at you the whole time.

And when they have to defend the work they get through is astonishing.

The support in all the Korean matches has gone beyond the hysteria level, but now it is reaching insane levels.

We were sitting in the ground some time after the game and there was still noise around the place.

Spain will not be able to hide behind their reputation

It wasn't a crowd celebrating it was a whole nation.

They are some of the nicest people you could ever meet and I am delighted for all the players and all the people.

To be fair, they had luck on their side against Italy.

And the decisions did not favour the Italians either.

But the Koreans never give up and always believe they can do something.

The belief is exceptional and Korea must now be believing anything is possible at this tournament.