Duke coach Mike Krzyzewski was not with the Blue Devils for Tuesday night's game at Georgia Tech, skipping the Atlantic Coast Conference game after becoming ill.
School officials issued a statement about an hour before tipoff saying Krzyzewski "was feeling under the weather" after the team meal Monday night and stayed in Durham, North Carolina.
Doctors at the university's hospital checked out the Hall of Fame coach and told him to remain home.
Associate head coach Jeff Capel was in charge during Coach K's absence. The school said Krzyzewski — the winningest men's coach in Division I history — is expected to return to the team soon.