Cuban told George Efkarpides of EuroHoops the "biggest gift" Doncic received was learning the game in his native Slovenia, where he could receive a true basketball education.
"If we took our best kids and seven years before they are McDonald's All-American, we sent them over to Slovenia to get an education, the league would be a thousand times better," he said. "They just learn how to play basketball, while our guys learn how to taunt and put together mixtapes."
The 19-year-old small forward is averaging 18.8 points, 6.6 rebounds, 4.9 assists and 1.2 steals across his first 29 appearances with the Mavericks.
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Cuban, who's far from alone in his criticism of the typically AAU-driven development of U.S. players, explained to Efkarpides getting to learn the game in Europe, including four years with Real Madrid in Spain, helped Doncic make a smooth transition.
"When you're gifted as he is and you actually learn to play the game," Cuban said. "If you look at the basketball education of kids starting at 11 years old in Europe and particularly Slovenia which is basketball oriented."
Mavericks legend Dirk Nowitzki was born and raised in Germany before getting his professional start with German club DJK Wurzburg. He's now been with Dallas for two decades.
So turning to Europe for a franchise cornerstone has worked wonders for the Mavs in the past, and the early returns suggest they may have struck gold again with Doncic.