Diamond deflectors on a roulette wheel are designed to add unpredictability by altering the ball’s path as it moves around the wheel. When the ball strikes these deflectors, its speed and direction change, making it harder to predict the final outcome. This added variability helps maintain the game’s randomness by disrupting any consistent ball path. However, if deflectors become worn or are unevenly spaced, they may introduce subtle biases, slightly influencing where the ball is more likely to land. Proper maintenance is crucial to ensure that diamond deflectors fulfill their role in preserving game fairness.