After playing in a member-guest at Oxbow (N.D.) CC, Aaron Greterman said he was informed that he was banned from the private club because of reports that he had used cocaine during the event. Greterman said he had only used an energy supplement and that the allegations led to damage of his reputation and real-estate business. His lawsuit, which names as defendants several Board members in addition to the club and the member who hosted him, seeks unspecified damages of more than $50,000.