Luka Doncic: NBA Finals loss can be springboard for Mavericks

Dallas star Luka Doncic was still absorbing the bitter blow of NBA Finals defeat, but one big lesson from the Mavericks 4-1 loss to the Boston Celtics was already clear. “We’ve got to fight next season,” the 25-year-old Slovenian said, adding that the example of the Celtics themselves — back in the winner’s circle after