With the Celtics racing out in transition, Marcus Smart sets up Jaylen Brown with an alley-pop off the glass.

Jaylen Brown reacts to Marcus Smart being traded to the Grizzlies earlier this summer and the impact Smart had on his career and the Celtics organization.

Arguably, the most impactful part of Marcus ... Smart over the offseason, a leadership void was left, a void Brad Stevens was hoping Tatum and Brown would assume. “We need Jayson and Jaylen ...

With 8:50 left in the first quarter, Marcus ... a chat with Jaylen Brown before scampering into the locker room. Like most players with plenty of tread still on their tires, Smart hadn’t spent ...