The Martingale system is also known as the doubling up system and the basic rules are that every time you have a losing bet you double your stake. In theory this would mean you always win one unit of your stake as profit every time you have a winning bet. This system is most commonly applied to casino games, often roulette on red or black or odd or even but can also be applied to sports betting too.
The Martingale has a sound theory but in practice the stakes soon mount up after a losing run and you may struggle to get your full stakes on. For example, even if your unit stake was £10, after 10 losing bets you’d be staking £10,240!
Many punters have tried to turn a small amount of money into a large amount of money by continually rolling winnings on to perceived certainties. This would involve starting with a bank of something like £50 and placing it on a 1/10 shot each time for a selected amount of bets, each time playing up the total bank. It may seem like this would take years to make realistic returns but even after 50 winning bets you’d have already made £5,869 and if you were able to find 100 winning bets at 1/10 in a row you’d win over £689,000! This is much harder than it sounds though even if you are picking 1/10 shots. More 1/10 shots get turned over than you’d think which is why 50 1/10 shots combined produce cumulative odds of 117/1, the chances of doing this are the equivalent of picking one 117/1 shot and it winning.