Dallas Mavericks star guard Luka Doncic …

Dallas Mavericks star guard Luka Doncic briefly entered the concussion protocol during Sunday’s loss to the Los Angeles Lakers after suffering a hard fall to the court during a first-half drive to the hoop. Doncic was fouled on the drive and stayed in to sink a pair of free throws, but he checked out of the game late in the second quarter and went to the locker room.