The Japanese wrecking ball known as the Monster takes center stage at the Tokyo Dome on Saturday, facing unbeaten rival Junto Nakatani in a matchup for the ages The Japanese wrecking ball known as the Monster takes center stage at the Tokyo Dome on Saturday, facing unbeaten rival Junto Nakatani in a matchup for the ages N aoya Inoue made it to the pinnacle of his sport with a destructive upward surge through boxing’s weight classes not seen since Manny Pacquiao’s prime. And he has made it clear