How come fighters never try to get in Floyd's head?

Or mental trick that could work. Just no fighters today around that weight that is intimidating enough to pull it off. Takes a BHOP type or an accurate hard puncher. At the press conference, show up in all black saying that Floyd just signed a death certificate. And when Floyd says his usual rants, just respond "When you get in the ring with me, it might be your last" or "When I'm done, I'm make sure you'll talk like Roger/Floyd Sr." And if Floyd tries to grab you by the neck, he's already gave up his defense so you can give off a free shot to the liver and he will be in pain before the fight happens. He cannot anticipate this and even if the fight is cancelled, Floyd will be the one in the wrong. When the fight comes off, come to the ring with funeral music and a funeral robe. When Floyd enters the ring, walk around the ring getting closer to his camp causing him to think somethings mentally off with you. If Floyd thinks you're capable of killing him for real and is not playing about it, he won't be throwing too many elbows I believe.