Taking aside cases like Brandon Jennings, there are 2 mains categories of draftable players:
- International players, who are basically foreigners who don't play in the USA.
- College players.
International players becomes automatically eligible if they turn 22 years old during the year of draft. They can early-enter in the draft if they turn 19,20 or 21. They have the right to withdraw their name 2 times of the early entry list.
College players are automatically eligible when they are senior. They can early-enter if they are freshman, sop re or junior. They have the right to withdraw their name 1 time of the early entry list providing they didn't sign with an agent.