Mavericks' Luka Doncic says it was 'tough' to see longtime GM Donnie Nelson get fired, and he's got a point | CBS Sports Headlines Mavericks' Luka Doncic says it was 'tough' to see longtime GM Donnie Nelson get fired, and he's got a point Nelson and Doncic had a relationship … Continue reading Mavericks' Luka Doncic says it was 'tough' to see longtime GM Donnie Nelson get fired, and he's got a point