Someone could have made a huge packet at 1000/1... Betfair are fucking stupid to offer such odds, there will never be a situation at the highest level of any sport where there's still more than half the game to play and their odds of winning are so low. If they offered that at the 43 minute mark of Australia vs American Samoa, fair enough, but at the highest level, they were very lucky someone didn't decide to stick a few thousand on Chelsea.