Mayweather: 'Pac Man' miles off me
Disagreement between the two camps over the holding of random drug tests has hampered chances of a potential bout since talk started in 2010, and Mayweather Jr has now insisted that the 'Pac Man' has got a mountain to climb if he is to face him.
"Manny Pacquiao got a lot of hurdles to get over to get to Floyd Mayweather," Mayweather Jr told CBS Sport. "He just got two back-to-back losses. I tried to make the fight to happen.
"The only thing I was asking for was random blood and urine testing just to show the world the sport of boxing is a clean sport."
Undefeated champion Mayweather Jr, 36, faces current WBC interim champion Robert Guerrero in Las Vegas on May 4 and while he believes 'The Ghost' will prove a tough opponent, 'Money' is confident that he will remain unbeaten and has discussed his game plan with his father.
"Robert Guerrero, he's solid. He's a solid, tough competitor," Mayweather said. "He's a very very busy fighter. He's strong, he's solid, and we'll see what he brings to the table.
"My dad truly believes the less you get hit, the longer you last in the sport. I've been able to last in the sport 17 years, which is a great thing."