The Martingale

The Martingale is the classic progression betting system. In its negative form, it involves doubling your bet size after a loss. This continues until you win. The doubling of bet sizing means that when you do win, the size of the winning bet is greater than the total of previous losses. For example, we can have three straight losses where we have a negative martingale betting string of $5, $10 and $20 for a total loss $35. If we win the fourth negative martingale bet of $40, then we have a net profit of $5. After a winning bet, you drop your bet size back to the initial bet.

The positive martingale involves doubling your bet size after a win, you continue doubling as long as you win until you reach the table limit. After a loss, you reduce your bet size to the initial bet.