What is the biggest roulette win?


To be frank, it’s not really known. There are some legendary single-night winners with interesting tales. But for the sake of the question, we’ll single out one such tale.

Joseph Jagger was a textile businessman who, after going bankrupt in the U.K., borrowed money and went to Monte Carlo. There, he analyzed the roulette wheel for days. After noticing a slight bias in the wheel (due to his textile manufacturing background), started placing successful bets. After two days he “broke the bank” and took home between $4.5 million and $7 million (adjusted for today’s inflation.)