The top 20 ranked prospects will take the green room prior to Thursday's NBA Draft, per DraftExpress.

Out of the list, provided by Sean Deveney of the Sporting News, only one of them is an international player, making this one of the strongest pool of American talent in the first round of the draft in the last 20 years.

These are the participants:

Jarrett Allen (Texas)

OG Anunoby (Indiana)

Lonzo Ball (UCLA)

John Collins (Wake Forest)

Zach Collins (Gonzaga)

De'Aaron Fox (Kentucky)

Markelle Fultz (Washington)

Jonathan Isaac (Florida State)

Josh Jackson (Kansas)

Justin Jackson (North Carolina)

Luke Kennard (Duke)

T.J. Leaf (UCLA)

Lauri Markkanen (Arizona)

Donovan Mitchell (Louisville)

Malik Monk (Kentucky)

Frank Ntilikina (France)

Justin Patton (Creighton)

Dennis Smith Jr. (North Carolina State)

Jayson Tatum (Duke)