NBA round-up: Dallas Mavericks' Luka Doncic scores 60-21-10 against New York Knicks

NBA round-up: Dallas Mavericks' Luka Doncic scored a monstrous 60-21-10 against the New York Knicks; Jayson Tatum and Jalen Brown combined for 77 points to lead the Boston Celtics to victory; Michael Porter Jr scored 30 points to earn the Denver Nuggets their eighth consecutive victory.