On July 7, 2018, Daniel Cormier knocked out Stipe Miocic at UFC 226 to become the second fighter in UFC history to hold two championship belts simultaneously, capturing the heavyweight title in addition to his light heavyweight belt. This victory marked the beginning of one of the UFC's most notable trilogies and solidified Cormier's status as one of the few fighters to have competed and defended titles in two weight classes. Cormier was 39 years old at the time of this achievement. Additionally, on this day in 2017, Justin Gaethje made his UFC debut with a memorable victory over Michael Johnson in the finale of The Ultimate Fighter season 25, showcasing his aggressive fighting style. The day also recalls Anderson Silva's successful middleweight title defense against Chael Sonnen, highlighting key moments in UFC history.