Ohio State Buckeyes big man Jared Sullinger has been medically red flagged by NBA doctors, multiple league sources told ESPN.com on Monday.

Sullinger, who is projected to be a lottery pick in the 2012 NBA draft, underwent a series of medical tests at the NBA draft combine a week ago. According to sources, the doctors who looked at Sullinger were concerned with Sullinger’s back.

Sullinger’s agent, David Falk, when reached via phone by ESPN.com said that he was not in a position to comment on the story.

Sullinger’s father, Satch Sullinger, said he believes the issue isn’t that serious.

via Chad Ford – ESPN.