Roach is trying to get into Mayweather’s head, but I doubt that is going to work. While Mayweather may have some insecurities outside the ring, inside the ring is where he feels most confident.
The more interesting comment I believe is Roach implying they are going to cheat. No one seems to have picked up on that. Here is what he had to say via Boxing Scene.
“I want to get inside his head a little bit,” Roach says to New York Magazine. “He’s not a secure person. He’s very fragile. He’s really insecure. You can tell by the way he lives. The money, the cars, the houses. I’ve seen that before in boxing. He’s on the road to disaster.”
Roach also says Mayweather is bothered by the sight of blood and may fall apart if Pacquiao inflicts a bad cut.
“Mayweather is bothered by blood,” Roach says. “I don’t know if Manny will be willing [to purposefully instigate a cut], but accidents do happen.”
He is basically saying, if Pacquiao would be willing to cause a cut (various ways to try to do that illegally) he would be ok with that.
That isn’t very good sportsmanship and I doubt Pacquiao would agree to it, but it shows you Roach is willing to do anything to win the fight.