Jake Paul is taking on a true G.O.A.T. in his next boxing match ... 'cause the Problem Child is fighting Mike freakin' Tyson!!
The huge event was announced just minutes ago ... with the YouTuber-turned-fighter saying his bout against the 57-year-old former heavyweight champion will be the "biggest fight in history."
"It's crazy to think that in my second pro fight, I went viral for knocking out Nate Robinson on Mike Tyson's undercard," Jake said on Thursday.