Final answer:
The infraction of not calling out an illegal play for personal gain is considered unsportsmanlike conduct and is discouraged in sports. Sports figures sometimes attribute winning to their own effort and losing to external factors, which reflects a self-serving bias. Maintaining integrity and fair play is essential in competitive sports.
Step-by-step explanation:
The infraction described where a player observes an opponent or teammate make an illegal play but chooses not to report it to take advantage is known as unsportsmanlike conduct. In competitive environments, this behavior is generally against the rules and can lead to penalties if discovered. Handling such situations with integrity is crucial to maintaining fairness and respect within the sport. For example, in competitive team sports, it is common to attribute outcomes to various factors. A sports figure may blame referees for incorrect calls when losing or attribute the win to their own hard work and talent. This selective attribution often reflects a self-serving bias designed to protect self-esteem or reputation in the face of failure and to elevate it in victory. However, acknowledging errors and playing by the rules are integral parts of sportsmanship.