In basketball, there are three referees on the field at all times during a game. Their roles include overseeing player conduct, enforcing rules, and ensuring fair play. The three-referee system helps maintain a higher level of oversight on the court, as it allows for better coverage of the action. Each referee has specific areas of responsibility, enhancing the accuracy of calls and reducing the potential for missed fouls or violations. This system has become standard in professional leagues to improve game officiating.