UFC 286 descended into chaos momentarily as the lights went out at the O2 Arena.
Flyweight Muhammad Mokaev was about to face off with Jafel Filho when the arena suffered a blackout.
The crowd cheered as though they watched a hometown hero score a stunning knockout – although the lights went out for the wrong reason.
But after a short wait, the arena filled with light again sparking a chorus of cheers from the rowdy crowd.
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