In order to have a tournament, you have to have all the top competitors in a single weight class fight within a couple months. That isn't currently the case for any weight class, so fighters may have to sit out for very long periods of time waiting for everyone to get a clear schedule.
It is the largest MMA promotion in the world as of 2024. It produces events worldwide that showcase 11 weight divisions (eight men's and three women's) and abides by the Unified Rules of Mixed Martial Arts. As of 2024, it had held over 600 events.
