Georgetown forward Greg Whittington has been declared academically ineligible.
"Greg will not participate in competition until further notice," Georgetown coach John Thompson III said in a statement.
Whittington ranks second on the team in points (12.1) and rebounds (7.0) per game.
He missed Georgetown's 67-51 win at St. John's on Saturday, and guard Jabril Trawick started in his place. Georgetown (11-3, 1-2, Big East) hosts Providence on Wednesday night.