The best centre backs in the world become more and more attacking as time goes by. Most of them, like David Luiz, Javi Martinez and Mats Hummels, are just as adept as playing as defensive midfielders. Others, like Sergio Ramos and Giorgio Chiellini, can play just as well as full backs. Nonetheless, along with Thiago Silva and Vincent Kompany, they are the best Central defenders in the world heading into 2013.