What determines who is better than whom is really in the eye of the beholder. Sure, statistics can support one's argument, but they don’t always give a clear-cut answer. Other qualities have to be considered. Leadership, motivation and importance to the team’s success are all important qualities that can support why a player who doesn’t put up huge stats is still a vital piece to his team.
Taking that into consideration, here is a list of the top 50 defensemen.