NBA: Mavs’ Ryan Nembhard’s 23 assists break his coach’s record

DALLAS — Ryan Nembhard broke Dallas coach Jason Kidd’s club rookie record with 23 assists after No. 1 pick Cooper Flagg’s debut season ended with an ankle injury, and the Mavericks beat the Chicago Bulls 149-128 in a season finale Sunday night. John Poulakidas scored 28 points to lead the Mavericks in a meeting of