Thomas Hearns REVEALS the DARK TRUTH About Marvin Hagler... The epic showdown between Thomas Hearns and Marvin Hagler is one of boxing's most legendary battles, but behind the scenes, there’s a darker story that few people know about. In this video, Thomas Hearns opens up about his rivalry with Hagler and reveals shocking truths about their relationship, the intensity of their fight, and what really went on outside the ring. Discover the untold details of this iconic matchup and the complex history between two of boxing’s greatest legends. This is the story behind the fight that changed everything.