Celtics forward Jayson Tatum is set to participate in Saturday’s critical Game 7 against the Philadelphia 76ers, confirmed by Coach Joe Mazzulla. Tatum, a pivotal figure in the Celtics’ lineup, has demonstrated impressive stats in seven career Game 7 appearances, posting averages of 26.7 points, 9.3 rebounds, and 5.1 assists. His presence is crucial as Boston seeks to advance at TD Garden.