In order to do this, dishonest casinos use a procedure, known as ball tripping.
One method of rigging a roulette wheel, which establishments probably prefer the most, is to control where on the wheelhead the ball will likely come to rest. Now, let us dedicate some time to discussing the most common ways of rigging a wheel, which are, unfortunately, part of casino practice, especially at dishonest gambling establishments.
The reason for it is there have been various ways to gaff roulette wheels since the genesis of the game itself and some of them are still in use today. In fact, one needs to be suspicious of wheels located in almost every state, with the exception of Nevada and New Jersey, no matter if the wheels are in legal or illegal halls. At some gaming establishments in the United States, due to the lack of gaming control board inspections, one can assume that all roulette wheels located in illegal gambling halls may be rigged.