How high has Time Lord jumped?
Robert Williams is enjoying a breakout third season for the Boston Celtics while emerging as one of the NBA's most exciting young big men.
But he's in a crowded group, as dynamic bigs like Zion Williamson and Domantas Sabonis already have become All-Stars before their 25th birthdays.
So, where does Williams rank among the best young power forwards and centers in the league today? We ranked the top 10 NBA big men under age 25 to find out.