A boxing match involving one of the UK's most popular YouTubers has been viewed more than 15 million times in less than two days.

Watford born Olajide Olatunji, recognized globally as KSI, faced fellow YouTuber Joe Weller at the sold out event at the Copper Box Arena in the Olympic Park, London, on Saturday evening.

KSI, 24, who has more than 17 million subscribers to his YouTube channel, beat his opponent by technical knock out in the third round. Neither had previously boxed professionally.

The clash was streamed live on video sharing website YouTube for free and has already been watched by 15 million people worldwide.

Watford Observer:

Around 2 million viewers tuned in live, making it boxing's biggest television audience since Vladmir Klitschko took on Watford's very own Anthony Joshua last April.

Multi-millionaire KSI rose to fame back in 2009 at his home in Watford, uploading videos of himself playing the popular video game FIFA. He has since uploaded more than 1,000 videos.

More recently, the Internet star has ventured into the music industry, releasing his first single as a solo artist, Lamborghini, in 2015. He has released three EPs since and has also written a book and starred in his own movie, Laid in America.

KSI's brother, Deji Olatunji, 21, has also taken YouTube by storm, under the name ComedyShortsGamer. He is closing in on 9 million subscribers.