Rising light heavyweight Jamahal Hill just scored one of the most devastating knockouts of the year in UFC

• Jamahal Hill scored one of the sickest knockouts of the UFC year so far.
• The American light heavyweight destroyed Johnny Walker with one right hand.

LAS VEGAS — Rising light heavyweight Jamahal Hill just scored one of the most devastating knockouts of the year in UFC competition.

Hill fought flashy rival Johnny Walker in the main event of the 12-fight UFC Fight Night card that took place at the MMA promotion's Apex studio in the Enterprise region of Las Vegas.

Violence took place Saturday.

There were finishes throughout the card, but none were so impactful, so brutal, and just so damned effective as the one Hill produced.

He had to subject his body to hell, to achieve it.

Walker, you see, preyed on him from the outside, moved in, and kicked him to the body. If that wasn't enough, he kicked him to the leg, too.

And to just keep Hill on his toes, he threw kicks at his head, too. Walker never let Hill get a moment's respite from the high kicks, and they eventually took their toll on his limbs from when he tried to block them.

But Walker's success was limited as Hill, who is nicknamed "Sweet Dreams," was about to send his Brazilian opponent to sleep. With an almighty right hand, Hill planted a wrecking ball through Walker's skull.

Insider was sat immediately behind Walker, who stumbled backward, flailed his arms in the air, and was clearly dazed, confused, and concussed.

He eventually found himself on his butt and on his back, resting against the fence of the cage, wondering what the hell had just happened.

But before he could even think about composing himself, Hill pounced on him with a follow-up blow.

Mercifully, the referee intervened to wave the bout off. It was all over — Hill had destroyed Walker, earning himself an extraordinary first-round finish.

Check out the sequence of events courtesy of photographer Jeff Bottari of Zuffa LLC and Getty Images.

Hill clattered Walker with an almighty right hand

Walker threw his arms up in the air and staggered back

Hill wrecked Walker's world

Watch it right here:

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Or here if you're in a different region:

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"Stop doubting and start believing, because it's real," Hill confidently asserted after his win was confirmed.

With victory, Hill advanced his pro MMA record to nine wins (five knockouts and four decisions) against one no contest and one loss.

He'll likely climb into the top-10 fighters ranked in the 205-pound division when the UFC refreshes its list of best light heavyweight fighters.