Roger Federer, Rafael Nadal, Novak Djokovic, Serena Williams, or Steffi Graf — tennis has produced athletes whose longevity, consistency, and competitive record at the very top of the game place them among the greatest sportspeople in history. But which player truly deserves to stand above all others? This ranking is built from real votes by tennis fans who have followed these careers across Grand Slams, on every surface, and in every kind of pressure situation, and formed genuine opinions about who has been most complete, most dominant, and most deserving of the GOAT title. The results update live as the global tennis community continues its most passionate debate. Vote for the player you believe is the greatest of all time.