Mavs guard Luka Doncic is an awesome basketball player. Unbelievably good," Brandon Payne -- Steph Curry's personal trainer -- told NBC Sports' Tom Haberstroh on "The Habershow" podcast. "His skill level is right up there with Stephen. "At that size, when you combine the skill level, the IQ and the amazing confidence that he has -- with his ability to control defenders and make players play at his speed -- you get what you're seeing here, which is a guy that night in and night out is pretty unstoppable.