'The Problem Child' managed to beat the former UFC star by unanimous decision in what was a dominant performance which saw Diaz knocked down in the fifth. 

Along with KSI, Paul can consider himself one of the biggest names in crossover boxing and now the rivalry between the pair has been heightened with KSI's reaction to the American's win on social media. 

"That Jake Paul performance was terrible," KSI posted on X. 

"October 14th you get to watch a real fight and challenge."

KSI returns to action on October 14 when he attempts to do something which Paul could not do and beat Tommy Fury in an upcoming MF & DAZN: X Series event.