“Many people have doubted me from the beginning and still do so. But I’m one of the people he has to prove wrong.
“I understand body language, I am very smart when it comes to [these things]. What his body said in that ring showed me everything that I need to see. Only the fighter would know within himself.
“The secret is still to be told. And that’s OK, because you want to keep people guessing. Was it this? Or was it that? That’s why the second fight is bigger. People don’t know what to think.
“People will finally see what it really was.
“If he’s not right, and people are saying one thing but he does another, then people will have their own perception of what they think about him afterwards.
“People say ‘if he loses, it’s over’.
“There is more pressure on him. When I talk about his situation I feel drained.
“Trust me, I have a sixth sense.”
Wilder and Tyson Fury also plan a second fight for 2020, after they battled to a draw last year.
Joshua’s promoter Eddie Hearn told Sky Sports this week: “I don’t see how the February fight [Wilder vs Fury] can happen.
“The whole world is looking at Joshua-Ruiz Jr, and I don’t think anything will happen until that fight takes place. Ruiz Jr is with the [promoters] PBC and Al Haymon, and so is Deontay Wilder.
“If Ruiz beats Joshua, they’ll be looking to make an undisputed fight [against Wilder], but obviously if Joshua wins, that throws everything out. Who can rule out Joshua against Tyson Fury at Wembley next summer?”
Joshua, asked if fights with Wilder and Fury would ever happen, told Sky Sports last week: “Yes, 100 per cent. That’s like asking if a certain football team will play another football team. Of course.
“We’re in the same division, in the same era. We have to fight each other.