NBA player DeJuan Blair -- who played for the Washington Wizards last season -- was cited for misdemeanor battery against a woman at a Vegas club this weekend ... TMZ Sports has learned.
Las Vegas Metro PD has confirmed ... officers were called to Drai's nightclub at The Cromwell hotel around 1 AM Sunday morning to respond to a report of a man who allegedly got physical with a woman.
The alleged victim told police ... she was arguing with Blair over the line into the club when he picked her up and tossed her off to the side.