The Martingale Strategy
This is one of the most widely discussed simple betting strategies for roulette. Loosely named for the man who invented it, John Henry Martingale, the system requires you to double your bet every time you lose. When a player using the Martingale system wins, they go back to using the table minimum. As every betting writer points out, table limits and the size of a player’s bankroll put a quick end to this strategy on a short losing streak. If the table limit is $1,000 per wager, player cans only double a $5 bet seven times. A $500 bankroll won’t allow you to double your bet more than five times.
If you need to double the bet again, you won’t have enough money because your bankroll is now down to $185. Why do people think this strategy works? Because the idea is that you will win back more than you have lost. In theory, it sounds fine. In practice, many players lose their money quickly. This strategy is only used on even money bets like red or black, odd or even, or high or low.