Shergar cup and false markets

How would you like some free money? A couple of clicks and you have instant profit on your screen (but maybe not your account!)

Book percentages

In an outright market than can only be one winner. That is why, if you add up all the odds and percentages, the market will settle on a book value of 100%. If you can lay above 100% then effectively your payout is only 100% but your profit will be anything above that.

If you …