The NBA will invite 20 players to the Barclays Center in Brooklyn for the 2019 NBA draft, according to ESPN's Jonathan Givony.
Williamson is the projected No. 1 pick, per Sports Illustrated's Jeremy Woo's most recent mock draft. Barrett is slotted to be selected No. 3 by the Knicks, who are picking in the top 10 for the fourth straight year.
The 2019 NBA draft will be held on June 20 at 7 p.m. ET.