Two 19-year-olds - Jabari Parker and Andrew Wiggins - are expected to be among the first three players picked in the NBA draft on June 26.
Drafting players that young won't be the case much longer if NBA commissioner Adam Silver gets his wish.
"I'm in favor of raising the minimum age from 19 to 20," Silver said Tuesday before the NBA draft lottery in New York.
That could ultimately end the "one-and-done" phenomenon in college basketball, when top players head to the pros after their freshman seasons.
The commissioner's goal is to have the age limit changed when the next collective bargaining agreement is negotiated with the players' union. That could happen in 2016, when either the players union or the owners can opt out.