
Roulette is one of the most recognised games in casinos, and it naturally raises questions about how outcomes are decided. A frequent claim is that the croupier can steer the ball towards a chosen number.
This article unpacks those myths and explains what really shapes a spin, from the role of the croupier and the build of the wheel to the safeguards used on the gaming floor.
It also highlights the key checks that prevent manipulation and what players can sensibly look for at the table. Roulette is intended as entertainment, and it should always be approached with care.
Read on to learn more.
A common myth is that croupiers can spin the roulette ball so it lands on a certain number. In practice, the interaction between ball and wheel makes that kind of control unrealistic.
Croupiers are trained to keep their technique steady. The ball is placed on the outer track and released in the opposite direction to the wheel’s rotation. Even so, no two spins are identical. Small differences in release point, speed and angle, along with slight changes in wheel rotation, create variation every time.
Roulette wheels are designed to be balanced and free from detectable flaws. The ball strikes the metal dividers, known as frets, and can bounce between pockets before settling. Those impacts add further unpredictability that a human cannot manage in real time.
Put simply, consistent targeting of a number or section is not feasible. So what actually decides where the ball finishes?
Every result is the product of physical forces acting together. The wheel turns one way, the ball travels the other, and their speeds decay at different rates. Friction, the ball’s material and size, the exact release point, and tiny currents in the air all combine to shape the path.
As the ball slows, it drops from the track onto the wheelhead, striking diamonds and frets before moving through several pockets. These collisions can change direction more than once, which is why two spins that look similar early on can end in very different places.
Casinos maintain strict build standards for wheels and carry out frequent checks for wear, loose parts or imbalance. This maintenance reduces any bias and keeps outcomes unpredictable.
Some believe a croupier might develop a recognisable way of spinning that produces the same outcome more often. While the idea is discussed, modern procedures make it highly unlikely in practice.
Croupiers are taught to vary the timing of the ball release in relation to the wheel’s moving number sequence. Small shifts in speed and angle, together with the changing position of the wheel at the moment of release, mean a near-identical delivery is rare. Even if a similar delivery were achieved, the ball’s later bounces would still break any pattern.
Management teams monitor for irregularities, reviewing results and observing technique. If a pattern appears, procedures can be adjusted and staff retrained to remove it. In short, the game is set up to prevent the kind of repeatable delivery that a signature spin would require.
With technique kept in check, the focus turns to oversight. How do casinos make sure everything on the table stays above board?
The operational structure of casinos makes collusion between a dealer and a player very difficult. Dealers work under constant supervision, with cameras covering the table, the wheel and chip movements. Floor staff and pit bosses are present to verify procedures and step in if anything looks out of line.
Communication opportunities are limited. Dealers rotate tables and shifts, and interactions with players are visible and brief. Procedures around payouts, buy-ins and table limits add further layers that would complicate any attempt to influence results.
If unusual behaviour is suspected, management can review footage, audit procedures and suspend staff while checks are made. There are clear consequences for improper conduct, and the combined oversight acts as a strong deterrent.
Roulette wheels are engineered to high standards so spins are consistent and outcomes remain uncertain. Regular servicing and checks protect against bias and keep the game credible.
Each wheel is built and calibrated to sit level and rotate smoothly. Balance is critical because any lean or uneven resistance could affect where the ball settles over time. Casinos inspect for wear, loose parts or surface damage, and they use specialist tools to check rotation and weight distribution. If an issue is found, the wheel is repaired or taken out of service.
Ball composition also matters. Many casinos use synthetic materials such as Teflon or resin because they hold their shape and resist wear. Balls are cleaned and inspected, and any with chips, flat spots or weight changes are replaced. Keeping the ball uniform reduces the chance of a consistent directional bias.
Fair play is supported by multiple safeguards. High‑quality cameras record every game, allowing teams in a control room to monitor live and review past spins if needed. On the floor, supervisors oversee procedures, verify payouts and observe dealer conduct.
Equipment is checked on a routine schedule, from the wheel’s rotation and level to the condition of the ball and frets. If an irregularity appears, the table can be paused for further inspection and, if necessary, for immediate maintenance.
With all that oversight, it is reasonable to ask whether dealer manipulation has ever been proven in modern venues.
Documented cases in regulated casinos are rare and typically involve several people rather than a single dealer acting alone. Multiple layers of surveillance, training and auditing make covert manipulation hard to sustain.
Where incidents have occurred historically, they often relate to unregulated venues or outdated equipment. In licensed casinos, staff are trained, rotated and supervised, which shortens the window for any improper activity and increases the chance of detection.
Footage review, results analysis and strict procedures mean suspected cases are escalated quickly. If a concern is confirmed, action can include suspension, dismissal and reporting to the relevant authorities. For most players, this framework provides a strong level of assurance.
So, with fairness looked after behind the scenes, what practical signs can players look for at the table itself?
If someone decides to play, a few simple observations can help them feel comfortable. The wheel should spin freely without wobble, and the frets and number pockets should look intact. The ball should be smooth and in good condition. A professional croupier will follow clear, consistent procedures and communicate calmly.
Supervisors should be visible on the floor, and staff should respond promptly to questions. It is sensible to choose licensed venues and to walk away from any table that feels poorly run or inconsistent. If anything seems off, speaking to a manager or contacting customer support is the right next step.
Always set personal limits that fit your circumstances and never risk more than you can afford to lose. Take breaks, keep play occasional, and seek support early if gambling affects your well-being or finances. Independent organisations such as GamCare and GambleAware provide free, confidential help for anyone who needs it.
**The information provided in this blog is intended for educational purposes and should not be construed as betting advice or a guarantee of success. Always gamble responsibly.