Dallas Mavericks star Luka Doncic exited Sunday's game against the Los Angeles Lakers minutes before halftime after taking a scary fall in the paint. The 20-year-old was driving to the basket with just over two minutes left in the half when he tangled with Dwight Howard and awkwardly hit his head on the floor. Doncic, who also appeared to hurt his lower back on the play, stayed in the game long enough to make a pair of free throws but then left for the locker room.