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UFC 251 breakdown: How Masvidal, Usman, Yan and Aldo can win on Fight Island

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Does Kamaru Usman have more pressure to win than Jorge Masvidal? (1:48)

Brett Okamoto explains why he thinks Kamaru Usman is facing more pressure to win at UFC 251 than his opponent, Jorge Masvidal, who agreed to the bout on six days' notice. (1:48)

The headliner of UFC 251 changed significantly when Gilbert Burns tested positive for COVID-19 and was removed from the welterweight title bout against Kamaru Usman and replaced by Jorge Masvidal. That's just one of three title fights on the card Saturday in Abu Dhabi, United Arab Emirates, but it is also one of the biggest fights the UFC could make.