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Video: Countdown To UFC 239 Featuring Jon Jones, Amanda Nunes

Two of the greatest mixed martial artists of all time return to the Octagon to defend their belts at UFC 239 [1] this Saturday night.

Jon Jones [2] faces Thiago Santos for the light heavyweight title and Amanda Nunes [3] takes on former champion Holly Holm for the bantamweight belt.

See these athletes train and prepare for their bouts in this edition of “Countdown.”