For better and occasionally worse, Jaylen Brown has always played like he’s certain he can beat any opponent who dares set a sole on the parquet.
In every game recently, no matter the court or competition, Brown has played with a relentlessness and focus that is making even his skeptics — a camp I’ve occasionally joined — believe in him the way he’s always believed in himself.
The Celtics’ 27-year-old wing — who somehow is already in his eighth season as a Celtic, or as many as Danny Ainge and Cedric Maxwell played here and one more than Dennis Johnson — is in the midst of his most efficient and effective season of his career.