Great rivals will be forever stuck with each other
For other sports it’s quite the norm. In modern tennis it’s nearly more uncommon than common not to have two all-time greats simultaneously vying for world supremacy: Borg and McEnroe, Evert and Navratilova, Graf and Seles, Sampras and Agassi, Federer and Nadal.
Boxing folklore is similarly defined. Robinson and La Motta; Ali and Frazier; the four kings of the 1980s middleweight division and all their epic tussles for that crown; any golden era for boxing has coincided with having at least one rivalry for the ages.
