KSI paid tribute to supporters after Sidemen defeated YouTube All Stars 8-7 in Saturday afternoon's eagerly-anticipated charity match.
More than £1million has so far been raised for charity. A sell-out crowd of 27,000 spectators attended The Valley - the home of League One outfit Charlton Athletic - to watch the event, which was previously held in 2016, 2017 and 2018.
KSI, who captained Sidemen, was one of the star attractions in London and was keen to hail all those who attended the game or watched it on YouTube - as well as those who donated to the cause. The YouTube stream attracted more than 3million viewers.
"We came back!" said KSI in his post-match interview. "We were losing at half-time and we came back! Incredible. To win that in the dying moments of the game - unbelievable.
"The whole event - amazing. This was, without a doubt, the best Sidemen charity match ever - incredible! Everyone played so well, it was so competitive. Fair play to everyone. Shout out to the fans who are watching - in the stadium and at home as well - thank you."
Chunkz, Vikkstar, Yung Filly, Theo Baker, Castro, Chris MD and WillNE were among those to find the net - while Niko Omilana, Miniminter and TBJZL all scored braces. Unfortunately, the trophy presentation did not take place in front of fans for security reasons.
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KSI is arguably one of the biggest YouTubers of his generation. The 29-year-old has nearly 16million subscribers on the platform and is a co-founder and member of Sidemen. The group have a combined total of more than 130million subscribers on YouTube.
KSI has also ventured into music, boxing and business. He has won all three of his professional boxing fights to date, beating Swarmz and Luis Alcaraz Pineda on the same evening in August. He defeated business partner Logan Paul in November 2019.
Speaking to Sky Sports before the game, KSI said: "It's incredible [the atmosphere], 27,000 people screaming, shouting, raring to go, everyone's buzzing.
"10 years ago we were in our bedrooms playing FIFA - pretending to be our favourite footballers. I didn't expect to ever be on a pitch or to be able to do boxing or music or whatever I'm doing. I didn't expect any of this."
Chunkz's goal was arguably the pick of the bunch, as he scored from around 40 yards out. Speaking after the match, he said: "I scored one, I got a couple of assists I think. I just thank God. I swear to God, I looked at the space and... [goalkeeper] Pieface - no disrespect, love him - I don't think he had the capability [to save the shot].
"I was doing my research, I watched the Sidemen game recently and he was absolutely horrible! Thank God! So I just thought, 'You know what, go for it'. When I saw it sink in, I was crying - because I was struggling with Soccer Aid three years in a row and I came back to the Sidemen pitch and I done it!"