What I failed to realize is the odds of black or red spinning next are not affected by previous sequences. Consider again my loss when I bet on black. The odds do not change no matter how many reds or blacks have spun in a row. And it’s the same for any “even chance” bet including highs and lows, and odds and evens. So the odds of red spinning are 18/37 = 0.4865. On the European wheel, there are 37 numbers. The odds of red or black spinning in a row It is still possible such a sequence will spin, but I’ll explain more about it later. But the truth is the casino staff were adjusting the wheel and attached equipment, which gave the strange readings. It was originally published by a player who seemed to want to discredit the casino. Only many years later did I understand my delusion. I lost everything that I so proudly won earlier with my dozens betting system. This happened for the next few spins, until I eventually blew my entire bankroll. Then I said to myself I’d have to be very unlucky to lose again. After all, what are the chances of red winning again, right? Well I lost. I thought to myself that black is due to spin next. Around 20 years ago, when I had no idea about winning roulette, I approached a roulette table with around 10 reds in a row.