Luka has always been ahead of his time on the court.
In his first practice as an 8-year-old at the Olimpija Basketball School in Ljubljana, Slovenia, he was so dominant that he was moved up to play against older kids after 16 minutes.
Over the next decade, he steadily climbed the ranks of European basketball and became the MVP of the EuroLeague Final Four at 19.
Even the leap to the NBA didn't slow him down.
Doncic was the runaway Rookie of the Year winner, and he immediately stepped in for Nowitzki as the new face of the Mavs.
The big advantage that Doncic has over other proto-Hardens is his size (6-foot-7, 230 pounds).
He's the only player on that list bigger than.
"learned at a very young age how to use his body, especially against bigger guys to get an extra bump," said Kleber, who came to the NBA from Germany at 25, about Doncic's ability to draw contact.
The overseas experience has also given Doncic a better understanding than most young players of how to bend the rules.
After Dallas's loss to the Trail Blazers on Sunday, he was mad that he took "only" 14 free throw attempts.
Most second-year guards are still figuring outtheir games.
That is not an issue for Doncic. He could run an offense and put up huge statistics from day one.
The challenge for him, like with all great players, will be translating his individual dominance into team success at the highest level.
And that will come down to the little things that don't always show up in the box score, like playing defense and moving off the ball.