While modern casinos strive to maintain fairness and use highly regulated, well-maintained equipment, historically, some players have exploited biased Roulette wheels. A biased wheel occurs when imperfections or wear lead certain numbers to come up more frequently. Today, casinos regularly inspect and replace wheels to prevent such biases, but in the past, players like Joseph Jagger famously capitalized on these imperfections to win large sums. In reputable, regulated casinos, biased wheels are extremely rare due to strict maintenance and oversight.