Knox, of Tampa (Fla.) Catholic, plays in the state championship game early Saturday morning. Following the game he will jump on a plane to be at the North Carolina/Duke game, which is being played at North Carolina.
Knox will then visit with the Duke staff for two hours on Sunday.
Duke and North Carolina are among Knox's list of finalists, which also includes Kentucky and Florida State.
Knox is ranked as the No. 7 overall prospect in the 2017 class.