ULYSSES DIAZ pulled off one of the quickest knockouts ever when downing his opponent in THREE SECONDS.
Donelei Benedetto was the Cuban's unfortunate opponent in Friday night's Bare Knuckle Fighting Championship event.
The bell had barely finished ringing when Diaz launched at his rival.
A quick left-hander brought down Benedetto's defence, leaving him open for a crunching right hook.
The punch caught him square in the cheekbone and its brutal effects were laid bare in stunning slow motion footage released by BKFC.
Diaz was fighting on the undercard of former Bellator star Luis Palomino, who downed ex-UFC man Jim Alers.
The 39-year-old has admitted to getting in brawls aplenty during a two-year stint in prison.
More recently he has put together a pro career spanning MMA, boxing, Jiu-Jitsu and bare knuckle.
In 13 boxing contests before moving to BKFC, he claimed 11 of his 12 victories via knockout.
And fans were wowed by Diaz's agility and strength in this latest triumph.
One Instagram user wrote: "People won’t stop talking about this for a long time."
Carlos posted online: "Cuban strength."
Another viewer commented: "Jesus…"
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