KSI was forced to 'tap out' against IShowSpeed during their wild, wild spar that had everything.
KSI and Speed agreed to a spar on Friday - the same night as Jake Paul's fight against Andre August.
The proceeds from the spar will benefit the Anthony Walker foundation, a charity formed to 'eradicate racism, hate and discrimination',
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And the action went down last night at an undisclosed location in London in front of a massive YouTube audience.
KSI, who hasn't fought since suffering the first loss of his professional boxing career to Tommy Fury, was forced to 'tap out' after dominating his fellow social media influencer. Check it out below:
KSI came out in his customary karate-like stance, with his hands down while Speed adopted a traditional style.
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He was immediately on the run as KSI asserted his dominance, having competed professionally.
The 4-1 (1) fighter dropped Speed with a body shot then put him through the ropes with a stiff jab.
KSI continued to batter Speed as he landed a flurry of body shots with his opponent against the ropes.
His relentless body attack saw him floor the 18-year-old once again. Taking no prisoners, KSI ruthlessly taunted him by dancing whilst his foe laid stricken on the canvas.
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At this point, KSI even asked Speed if he wanted to stop the spar. To his credit, he refused to give up and persevered despite the beatdown.
Speed launched his own attack after KSI goaded him.
After the spar, Speed slumped to the corner as KSI praised his effort in the ring.
"You showed good heart," he said. "It takes a big man to get in the ring with me.
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"Many have tried, many have failed and, according to judges, someone was victorious."
Speed refused to stop the spar: "It's not over."
KSI then made shock gesture: "For you and for your tenacity, I'm gonna tap out."
An emotional Speed wanted to prolong the spar and complete the full six rounds.
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But KSI left the ring, having punished him in the ring.
Featured Image Credit: IShowSpeedTopics: KSI, IShowSpeed, Boxing