Over the past few years, performance enhancing drugs and money have been claimed to be the leading causes of preventing the Mayweather Jr. vs. Pacquiapo showdown form taking place.
For some time Mayweather Jr. was confident that his gut feeling of Manny Pacquaio using PEDs was, well, not a just gut feeling at all. He blatantly claimed that there is no way that a fighter can go up in weight so fast, while experiencing no decline in speed or power. After some time, both fighters ended up across the phone line, trying to come to some sort of an agreement, which ended fruitlessly, with Pacquiao asking for more money than Floyd was willing to pay.