I think the article actually says something slightly different -- which changes the math a lot. Yes, they placed these "neighbors" bets, but it sounds as if th

I think the article actually says something slightly different -- which changes the math a lot. Yes, they placed these "neighbors" bets, but it sounds as if they had several of them in motion on each spin. If they're covering an average of three clusters per spin, our random odds become (15/37)^13, which is approximately 1:125,000. Still plenty of grounds for suspicion, but if the casino is open for action all year and hosting 1000 or more roulette betting episodes a night (i.e. 13 spins/player), something this improbable SHOULD happen several times a year.