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MMA is a combat sport that, according to the Unified Rules put together in the 2000s, has 15 weight classes. However, the UFC is not obligated to include all of them, which is the reason why there are “only” 8 weight classes for men and 4 for female fighters. Each UFC fighter competes in one division where they fight against opponents similar in weight and size, and they can also move up or down in weight to change the weight class.

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If a UFC fighter misses weight at the first weigh-in, the athletic commission will give them up to two hours to make the weight. But if they fail again at the second weigh-in, the bout will likely turn into a catchweight fight. The fighter who missed weight may forfeit up to 30% of their purse.

Read More about What Happens When A UFC Fighter Misses Weight? Fully Explained

UFC fighters typically fight 2-3 times per year. Unranked and low-ranked fighters compete up to 5 times per year, whereas top-ranked fighters typically fight 1-2 times per year. Injuries, contract disputes, and medical suspensions are some reasons that impede fighters from competing more often.

Read More about How Many Times A Year Do UFC Fighters Fight? Fully Explained