You are but one of the many white, racist, Pacquiao fans (he is viewed as being closer to white than Mayweather by these fans -- I have known folks like you my whole adult life).
The fight between these two was postponed for years as Mayweather insisted on random, Olympic-style blood and urine testing and Pacquiao declined to agree to the specific form of drug testing, and the deal fell apart.
Mayweather has required himself and his opponents to be tested by USADA for all of his bouts since 2010, while Pacquiao has sometimes used the Voluntary Anti-Doping Association to randomly test him and his opponent in recent years.
I am sure if Mayweather was using PEDs he would have insisted on testing for them. Makes lots of sense.
Further you are silent on Manny's refusal to undergo testing.
You also left out the following:
Floyd Mayweather strongly denied Thursday any wrongdoing related to his receiving an intravenous injection mix of saline and vitamins -- banned under World Anti-Doping Agency guidelines -- on the eve of his record-breaking fight with Manny Pacquiao on May 2.
The United States Anti-Doping Agency on Thursday also disputed that Mayweather violated any rules, saying the boxer applied for and was granted an exemption for the infusion.
"As already confirmed by the USADA statement, I did not commit any violations of the Nevada or USADA drug testing guidelines," Mayweather said in a statement. "I follow and have always followed the rules of Nevada and USADA, the gold standard of drug testing.