amittedly I didn't read the link, but I think you are overlooking something there, there aren't many 2 horse racing, and if its football it can be a draw and your £200 down, dont you think the betting companies would have thought about this before offering this.
gerard 
Oh dear oh dear :

Another quick example for you.......
Man U v Chelsea.....
You back £200 Man U to win.....
You lay £200 Man U ( as in previous post, lay means NOT win)
Man U win.....you win the back bet
Man U lose..... you win the lay bet
Man U draw... you win the lay bet
Got it now?
Stop arguing when you can't be bothered to read how it works