[Amick] The Celtics believed that Brown went off script too often during playoff games as Boston blew a 3-1 lead, according to a league source. Over the final 3 games, Celtics were outscored by 57 points w/ Brown on the court. In Game 7, he shot 12⁄27 and finished the series w/ more TOs than AST.
Fascinating dump from Amick/King:
Contributing to concerns about the situation, the Celtics believed that Brown went off script too often during playoff games as Boston blew a 3-1 first-round lead to Philadelphia, according to a league source. Over the final three games of that series, the Celtics were outscored by 57 points with Brown on the court. Though he scored 33 points in a Game 7 loss, he shot 12 for 27 from the field and finished the series with more turnovers than assists. Afterward, despite the loss, he stated how much he appreciated the style the Celtics played in that game, which was played without Tatum on the court. He thought they had played faster and freer.
“Tonight, I wish we played that style and trusted that style more, even throughout the playoffs, even through wins and through losses,” Brown said. “Obviously it’s not always the easiest decision, but I wish that style for our team was how we empowered the rest of our group, and you saw tonight how everybody came out and they played their tail off. I wish we trusted that more.”
Though far from unforgivable, those comments could have been viewed as a criticism of head coach Joe Mazzulla. They could have been taken as a hint that Brown preferred how the Celtics played without Tatum. Regardless of what Brown intended, as he ended the best season of his career, some around the NBA wondered whether his words suggested the possibility of future friction between him and his organization.