Dallas Mavericks point guard Luka Doncic (77) jumps and passes the ball as Orlando Magic forward Chuma Okeke (3) defends during the first half of a preseason game on Oct. 7 in Dallas. AP
By Schuyler Dixon Associated Press DALLAS — Luka Doncic has a new sidekick — but not a co-star — as the Dallas Mavericks try to…
