Rysheed Jordan suffered a knee injury in St. John's 77-74 loss at Creighton on Wednesday, and his status going forward is still unknown.
Coach Steve Lavin called the injury a strained patellar tendon. Jordan will be examined by doctors Thursday afternoon.
Losing Jordan for any length of time would be a crippling blow for the reeling Red Storm (13-7, 2-5 Big East), who have now lost six of their past eight games. He is the team's second-leading scorer (13.4 ppg), and Lavin is essentially playing with just a six-man rotation.
St. John's, once ranked as high as No. 15 in the country, would miss the NCAA Tournament if the season ended today. But Lavin remains stubbornly optimistic.
"We did some good things offensively, we had nice balance -- four players in double figures," Lavin said Thursday of his team's performance against Creighton. "Only eight turnovers, and we actually rebounded well for the first time in a couple weeks here. And we shot the ball lights-out, probably had our second-best 3-point shooting night of the season."
Creighton was 0-8 in the Big East before Wednesday night's game. Next up for St. John's is a home game versus Providence (16-5, 6-2 Big East) on Saturday afternoon.