A 26-year-old American is credited with the 'most unbelievable' KO in UFC history, after unleashing a jump spinning back kick

• Joaquin Buckley produced the most "unbelievable knockout in UFC history" during the Fight Island festival in Abu Dhabi.
• Buckley fought a middleweight match against Impa Kasanganay at the behind-closed-doors Flash Forum on Yas Island, Saturday.
• Midway through the second round, Kasanganay appeared in control as he caught a Buckley kick and had his opponent's foot in the palm of his hand.
• But then Buckley did something which has to be seen to be believed. And you can watch it right here.

Joaquin Buckley's jump spinning back kick stoppage win against Impa Kasanganay may not just be the knockout of the year, but the greatest KO of all-time.

The 26-year-old American fought Kasanganay in one of 13 matches during the ongoing UFC "Fight Island" festival at the Flash Forum on Yas Island, Abu Dhabi, on Saturday, October 10.

Kasanganay appeared to have control midway through the second round of the middleweight bout as he caught one of Buckley's kicks and had his opponent's foot in the palm of his hand.

But, showing remarkable ingenuity, Buckley transitioned into a jump spinning back kick.

The maneuver took Kasanganay by surprise and he likely may not have even known what had happened until he had woken up later, as the strike left him concussed and defeated on the floor.

Those watching Octagonside, at the behind-closed-doors and sanitized venue, were visibly in shock, watching on open-mouthed and with their arms in the air.

Watch the finish right here:

—ESPN MMA (@espnmma) October 10, 2020

Or here if you're in a different region:

—UFC on BT Sport (@btsportufc) October 10, 2020

"I seen that he still had my legs, I was still able to balance with him grabbing my foot, so I just spun and kicked," Buckley said after the win,

"I aimed and I fire and it got the result we needed. I know I landed flush, I didn't know if I knocked him out though until he locked up and I said it was game over.

"I train it all the time, the only thing that was different was him holding my leg, but I practice it all the time."

The finish was so awesome, Buckley was awarded with a $50,000 performance-related bonus check.

The UFC's official social media channel credited Buckley's finish as "the most unbelievable KO in UFC history."

It will likely be replayed forever.

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