St. John's starting center Chris Obekpa will sit out an estimated 10 to 14 days with a right ankle injury suffered in practice Monday.
An MRI on Tuesday revealed a sprain and a bone bruise.
Obekpa has been a key to St. John's recent success. The 6-foot-9 sophomore emerged from a midseason funk to score in double figures in four of the team's past six games. He's currently 11th in the nation in blocked shots with 3.2 per game.