DALLAS — Luka Doncic didn’t see Jaylen Brown because Luka Doncic was staring behind him, staring down Marcus Morris, who he had just beaten off the dribble, which had led to Doncic’s no-look shovel assist to a dunking DeAndre Jordan. Doncic had done this frequently in the minutes preceding this one, and the Boston Celtics to him. So Doncic didn’t see Brown, who lowered his shoulder into an unsuspecting Doncic, knocking him to the floor. “They got mad at him,” J.J. Barea laughed afterward. They did.



Doncic, plus a healthy helping of Barea, enraged the Celtics on Saturday, and then beat them, 113-104, which moved Dallas to .500 – nine wins, nine losses – for the first time all year.



The Celtics are a frustrated team; they’re just 10-10 after an Eastern Conference championship one year ago, with talent evident but success elusive. The team won Friday; obviously, they wanted another one Saturday. Instead,...