The game starts when players place their bets and the dealer drops a ball into the spinning roulette wheel. Take a spin to win! Roulette in Las Vegas Types of Roulette Bets The casinos don’t mind providing this information because it doesn’t give players any advantage. The casino supplies this information for players who falsely believe recent outcomes can influence future outcomes. Each roulette table has one that displays the outcomes of the most recent spins. When they get it right, the dealer announces their number and color which appears on a screen, called a tote board. Before each one, they rely on their intuition and superstition to predict the winning number. Playing at this pace, players will see an average of 55 spins per hour. An average dealer gets 27 to 29 revolutions per spin.