Celtics crank up offense to record levels while awaiting Tatum return

BOSTON—The Celtics have been one of the NBA’s hottest teams since returning from the All-Star break. They can add one of the best offensive performances in league history to their list of accomplishments as they await a possible return of star Jayson Tatum to action. Boston shot a season-high 66.7 percent (52 of 78) from