Biz Mackey, a Giant behind the PlateThe best all around catcher in black baseball historyCumberland Posey, Owner of the Homestead Grays National Baseball Hall of Fame catcher James Raleigh Biz Mackeys professional career spanned nearly three decades in the Negro Leagues and elsewhere. He distinguished himself as a defensive catcher who also had an impressive batting average and later worked as a manager of the Newark Eagles and the Baltimore Elite Giants. Using archival materials and