UFC 325 has hit a snag before even stepping into the octagon, as the official weigh-ins for the event took an unexpected turn. In a dramatic twist, flyweight fighter Aaron Tau's weigh-in attempt ...

UFC 323 featured a pair of huge matchups in the UFC flyweight rankings. In the co-main event, division king Alexandre Pantoja defended his gold against fast-rising star Joshuan Van. Plus, early on the ...

Muhammad Mokaev added to his case for being considered the best flyweight fighter in MMA with a title-winning performance at BRAVE CF 100. Poised for a flyweight title shot against Alexandre Pantoja ...

Two fighters missed weight and one fighter collapsed in a scary sight at Friday's official weigh-ins for UFC 324.

Brandon Moreno, the "Assassin Baby," has etched his name in MMA history as the first Mexican to win the Ultimate Flyweight ...

Here's a look at every weight class to determine the best of the best in UFC, PFL and beyond.