Throughout bodybuilding history, there have often been dominant champions. However, there have also been standout competitors who have challenged the dominance of these champions repeatedly. From Arnold Schwarzenegger and Sergio Oliva to Phil Heath and Kai Greene, some rivalries have been etched in the history of bodybuilding. However, the rivalry between eight-time Mr. Olympia Ronnie Coleman and four-time Mr. Olympia Jay Cutler is perhaps the greatest in bodybuilding history.