IShowSpeed lived up to his name by destroying KSI in a race ahead of Saturday's Sidemen charity fixture.
For the second year running the pair of YouTube stars will square off against one another in the game, which will raise funds for causes such as the Teenage Cancer Trust, Campaign Against Living Miserably (CALM) and Bright Side.
It will take place at West Ham's London Stadium, with a sell-out crowd of 62,000 expected.KSI has a huge blockbuster boxing fight against Tommy Fury on the horizon in October but he is still getting stuck in on the football pitch, going in net for Sidemen FC against the YouTube All-Stars.
And prior to the showdown, he tussled it against 'Speed' in a sprint at a local park. The Cristiano Ronaldo superfan wore his Portugal shirt with the five-time Ballon d'Or's name on the back and put his hand on his heart before the race began.
He turned on the burners straight away and left KSI eating his dust as he struggled to keep up with him.
He screamed, "I'm speed on my mama, I'm speed, I'm speed, I'm speed, I'm speed" before celebrating his victory with Ronaldo 'SIUU'.
The 18-year-old did shake hands with KSI but could then be heard commenting: "What did I say? What did I tell him? What did I tell him?"
Speed made his debut in the Sidemen match last year at Charlton Athletic's Valley Stadium and immediately crunched into KSI with a brutal tackle just 16 seconds into the match.
He proceeded to celebrate as though he had just scored - something he did do later on only for the goal to be chalked off for offside.
That led to him whipping referee Mark Clattenburg with the shirt he had just taken off and one cannot expect the same kind of antics in his second appearance.
