Jon Jones is the undisputed GOAT

Jon Jones is the undisputed greatest fighter of all time because he has never lost in the octagon, dominated the toughest weight class (light heavyweight) and then won easily at heavyweight, with longevity, and—most tellingly—when Gustafsson took him into the deep water and hit him with things he'd never faced, Jones was willing to do whatever it took to win, revealing true championship heart.