(Courtesy of UFC)

Go inside the lives and training camps of four extraordinary athletes preparing for UFC 224. Bantamweight champion Amanda Nunes defends her title against Raquel Pennington; middleweight Jacare Souza battles Ultimate Fighter winner Kelvin Gastelum.

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Tune in on Saturday for full UFC 224: Nunes vs. Pennington live results and fight stats. The first UFC 224 bout is scheduled to begin at 6:15 p.m. ET / 3:15 p.m. PT.