Anthony Joshua has offered some tactical advice to KSI on how to beat Logan Paul.
The YouTube stars will enter the ring for a second time on Saturday night after their initial fight ended in a draw.
Both fighters have stepped up their training this time around and have even warned they would fancy their chances against professionals.
Ahead of the fight, KSI decided to FaceTime former world heavyweight champion Joshua and took some tips from the Brit.
In a clip posted by promoters DAZN, Joshua says: "Your fights are exciting but there comes a stage where it becomes very aggressive.
"For you, controlled aggression. You have to have a gameplan and stick to it.
"If your creative tells you something, you have to follow that through.
"You can't let your red mist get in the way and then it becomes a puncher's chance.
"You have to stick to controlled aggression and show discipline."
The YouTube stars both vowed to send their the other into boxing and social media retirement at the final weigh-in.
“He’s been saying the same thing every time, that he’s going to end me," said Paul. “I told him [promoter] Eddie Hearn is going to be in trouble because he’s going to get hurt.
“I perform the best at my natural weight, watch me hit this man repeatedly on his giant forehead.”
And after weighing in, KSI - real name Olajide William Olatunji - said: "He should have beat me in his last fight; that was his best opportunity, now I’m too good for him.
“Once I get rid of the jab it’s over for him; he knows he’s finished, he knows nothing about boxing.”
