Scary One-Punch Knockout On Manny Pacquiao's Undercard Dubbed 'KO Of The Year'

It's pretty well documented that Mark Magsayo is Manny Pacquiao's protege.

Well yesterday the student became the teacher and gave everyone a lesson in one-punch power - especially Julio Ceja.

The Filipino star knocked Ceja out cold in the 10th round of their bout, leaving everyone watching - including Pacquiao himself who was backstage - stunned.

It was a back-and-forth battle right from the very first bell.

The undefeated Magsayo landed the earliest blow by dropping his opponent in the very first round before Ceja fought back to take control of the fight, culminating in a huge shot which left Magsayo on the canvas.

But in the 10th round, the bout got tipped on its head once again when Magsayo produced a devastating right hook which landed right on Ceja's jaw.

The impact of the blow saw Ceja go instantly unconscious as he toppled back into the ropes and struggled to regain his balance.

Then, to really finish him off, Magsayo landed another follow-up right hand which put his rival to sleep.

Lying motionless on the canvas and staring up at the bright Las Vegas lights, it took a couple of minutes for Ceja to regain consciousness.

Meanwhile, Magsayo wheeled away in celebration as the referee waved off the fight.

"He's out," Joe Goossen reacted in commentary.

"What a shot. This fight is over. What a great, great comeback win, great knockout. He went down hard. He's still out.

"It's exhilarating on one side, frightening on another. Ceja was just knocked out cold and that's the way this business rolls."

Incredibly, Magsayo was losing on all three judges' scorecards at the time of the scary knockout.

The finish means the Filipino keeps his unbeaten record in tact and also takes his career knockouts to 16 in total.

Unsurprisingly, when footage of the knockout made its way onto social media, boxing fans went nuts with some already dubbing it the "KO of the year".

It was an incredible night for Magsayo, although the same couldn't be said for his fellow compatriot and mentor Pacquiao.

The boxing legend's fairytale return after two years out ended in heartbreak with a demoralising unanimous-decision loss at the hands of Yordenis Ugas.

42-year-old Pacquiao, an eight-division world champion, is still unsure of what the future holds for him inside the ring and remained coy when asked about it after his damning defeat.

"In my heart, I want to continue to fight," he said.

"But the thing is, I also have to consider my body. I've put it through a lot of things. Especially back in my country, there's a lot of things that I need to accomplish to help people. I want to be an inspiration to the Philippine people inside and outside the ring."