I didn't realize the NBA required you to be 19 AND one year removed from high school to be eligible for the draft. The catch is, you only have to be 19 during the calendar year the draft is held. So you can be drafted at 18, so long as turn 19 by the end of the year. GG turns 19 on 12/17/2023. If he was born 2 weeks later, he'd be coming back to school for another year.