Logan Paul left stunned by brother Jake’s brutal knockout against Andre August

Logan Paul was left stunned after his brother, Jake, delivered a brutal first-round knockout against Andre August.

After beating MMA star Nate Diaz back in August, American YouTuber turned boxer Jake was once again back in the boxing ring.

This time, the 26-year-old made light work of August as he unleashed a devastating uppercut with 28 seconds remaining in the opening round.

After the brutal blow was delivered, Jake’s brother, Logan was left stunned as his reaction went viral on social media, you can watch the footage below.

Posting the video from ringside, Logan’s caption simply read: “my god @jakepaul.”

As seen in the video, the camera panned to Logan was all smiles before mocking August by putting his head to his hands in a sleeping motion.

Reacting to his win, Jake said told DAZN: “Right now, I'm focused on being the best in the world and creating one of the greatest sports stories in the history of sports: being able to become a world champion from Disney Channel. Now I'm lasered in.

"I'm just really happy, you know, that's that delayed gratification, working hard this whole entire year. And it's just all paying off, you know, just the power of manifestation.”

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He added: “I think this is the best one just because the first-round (knockout) calling it the whole entire week. Not getting hit one time in the fight and just setting him up for that.

“He kept on ducking low, ducking low and I was like, 'Okay, I'm going to throw the uppercut'. But I got to make sure he keeps on ducking low, assess him, set him up for and finished it, threw it through that thing hard.

“This guy was 10-1 boxing his whole life, three-time Golden Glove champion, and he didn't last more than two and a half minutes. And I was just getting warmed up for it.”