The UFC’s third trip to Russia provided the promotion with an announced sell-out of 11,305 fans. UFC officials announced the figures following the event. UFC on ESPN+ 21 took place Saturday at CSKA Arena in Moscow. The entire card streamed on ESPN+. As is typical with the UFC’s Russian events, a gate total was not announced.
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UFC on ESPN+ 21 draws announced 11,305 attendance for sell-out in Moscow – MMA Junkie