This time it was Xavi with the through-ball, a perfectly weighted pass that sent Alba streaking through on goal.

WSJ: Euro 2012: The Reign in Spain Continues

Moreover, Dr Abrahamson's theory fails to explain how ball-lightning can pass through windows and other solid objects, as some claim.

ECONOMIST: Ball lightning

The youngster showed good pace, and excellent balance on the slippy surface, to latch onto a through-pass and slide the ball under Brian Murphy in the Swansea goal.

BBC: Swansea director of football Brian Flynn