Contract extension in hand, the mature 23-year-old continues to improve in his fourth NBA season.

Philadelphia controls the fourth quarter to pull away from Boston.

With Kyrie Irving no longer in play, Boston will be counting on its big free-agent acquisition and two talented but young players to lead them into contention starting Wednesday against Philadelphia.

The Boston forward will get a deal that could pay as much as $115 million.

As Boston begins preseason practices, Walker says his relationship with Coach Brad Stevens will be important.

New Celitcs center Enes Kanter – whose passport was revoked by the Turkish government in 2017 – says the Turkish consulate tried to derail his basketball camps, including one at UMass-Boston.

From Jaylen Brown’s new haircut to two new key players to a new offensive look, Boston will seek to cast aside last season’s disappointments.

Brad Stevens’ team begins training camp on Tuesday after a season in which they were bounced from the playoffs in the second round.