The Martingale system is one of the most popular strategies used by roulette players, however it can also be used in sports betting. It is a fairly risky system and does require a reasonably sized bank to get started, however it has the potential to be hugely rewarding for those who successfully deploy it. | It was extremely popular back in the 18th century, and although a few tweaks have been made over the years, it still remains one of the most popular systems in existence. The Martingale system involves doubling your stake following a loss. Theoretically, this will enable bettors to recoup any previous outlays. Players continue to double their stake until they strike it lucky. This system heavily relies upon a 50/50 outcome, hence why it is largely used on Red/Black or Odd/Even at the roulette table. Example: $10 on Bet 1 at +100 – LOSS Running total -$10 $20 on Bet 2 at +100 – LOSS Running total -$20 $40 on Bet 3 at +100 – WIN Running total +$10 Bet number three was a winner and the player has won $40 as well as having their stake returned on this particular wager. They would have lost $30 on the first two wagers, however they have since recouped $40 – this makes an overall profit of +$10.