This means you don't lose your entire bankroll if (God forbid) Man Utd don't win and you lose your bet, then you will have nothing left to continue betting.

It sounds easy, but it's not so easy in practice. It's discipline because you have a percentage amount of your betting bank on the bet.

Now, if Man Utd don't win at 100/1, and the following day another bookie puts up 100/1 Tiger Woods to win the Masters. The smart gmablers will again back this to a MAXIMUM bet stake. Those who had every penny on Man Utd will not.

Everyone who had all their money on Man Utd at the ridiculous 100/1 now can't back Tiger.

The smart disciplined winners among us who bet from a percentage of their betting bank had two MAXIMUM bets. One lost, and one won.

It was a 100/1 winner and we are making absolutely huge profits and we are big winners. More importantly, we will continue to be big winners all our lives because of our discipline.

As much as these examples are extreme, just scale down the outrageousness of the bets to see why some people are winners and the others (the majority) are losers.