He was teammates with his two older brothers, Lonzo and LiAngelo, and his cousin, Andre Ball.[5] In his first game, Ball scored 27 points as a starter.[6] On March 5, 2016, he scored 26 points in a win over Sierra Canyon School for the CIF Southern Section Open Division title.[7] Later in the month, Ball helped his team capture the CIF Open Division state championship, recording 14 points in the title game against De La Salle High School.