Mike Krzyzewski is barring NBA teams from scouting Duke's practices this season except for two pro days scheduled in October.

NBA executives were extended invitations to pro days on Oct. 19 and 25 at Cameron Indoor Stadium.

“All other practices will be closed,” Duke told teams in an email.

NBA executives and scouts are free to scout any and all college games.

John Calipari instituted consecutive preseason pro days in October for his program, although those have been held on back-to-back days, which allow team executives to make a single trip. 

Jayson Tatum and Harry Giles are anticipated high lottery picks in the 2017 NBA Draft.

DeAndre Ayton has committed to Arizona for the incoming class of 2017.

Ayton is widely considered the No. 1 prospect of the 2017 class and is expected to be the first overall pick in 2018.