Ex-NBA star Glen "Big Baby" Davis has been named a person of interest in a parking lot beatdown that left one man hospitalized ... TMZ Sports has learned.
Law enforcement sources tell us ... witnesses have told investigators Davis was driving erratically in a parking lot Sunday evening near Factory nightclub in West Hollywood.
After nearly striking a man with his vehicle, witnesses say the victim tried to confront Davis ... but Davis got out of his car and things turned physical.
We're told witnesses say Davis threw the man to the ground -- and eventually left the scene.