Systems and methods are provided for determining reduced player performance during a sporting event. The system can use one or more sensors to capture information about actions such as shooting, dribbling, kicking and/or passing an object performed by the player and at least one processor to analyze the information in order to evaluate the player's performance. The system can determine and store at least one parameter indicative of the performance of the player in performing an action, and calculate based on the at least one stored parameter at least one value indicative of whether player intentionally underperformed the action and provide an output indicative of the assessment.