By Jim Dower: In an interview with DJ Whoo Kid on Shade 45 sirius satellite radio, unbeaten Floyd Mayweather chimed in on his thoughts about World Boxing Association welterweight champion Manny Pacquiao, steroids and cleaning up the sport of boxing. Mayweather says “In a fighter’s career, a fighter starts off good and fights good all the way through the end of his career or a fighter starts off good and goes downhill towards the end of his career. A fighter doesn’t start off like Manny Pacquiao, just ordinary, and once he gets past 25. It just doesn’t work like that in the sport of boxing. So what I’m saying is that I’m just trying to clean up the sport of boxing period.”

Mayweather previously was in negotiations for a fight with Manny Pacquiao. However, the fight fell apart during negotiations due to the random blood tests that Mayweather insisted on for the fight. Pacquiao was willing to take the tests, but Mayweather wanted the tests to continue inside of the 30 day window leading up to the fight stopping at 14 days before the fight. Pacquiao was willing to take the blood tests until 24 days before the fight but no closer than that because the tests weakened him.

With that fight off the table, Pacquiao quickly replaced Mayweather with former IBF welterweight champion Joshua Clottey, who Pacquiao will be fighting on March 13th at the Dallas Cowboy stadium, in Arlington, Texas. Mayweather recently chose to fight World Boxing Association welterweight champion Shane Mosley. The two of them will fight on May 1st at the MGM Grand, in Las Vegas, Nevada.

Mayweather says “He’s not the only one that has to take random blood tests. I do to…I never met anyone in sports history that didn’t want to take a $25 million drug test…All drugs don’t show up in your urine.”

In his fight with Shane Mosley, random blood testing will be part of that fight. Mosley, however, is more than willing to take the blood tests without qualms.

Mayweather continues on the subject: “I’m trying to clean up sports period. At one particular time in sports, they weren’t checking for HIV. But now they do check for HIV. At one particular time in boxing, you weighed in the morning of the fight. Now you weigh in the day before the fight. It’s out with the old and in with the new…A lot of questions people want to know is why Floyd Mayweather and Manny Pacquiao fight. It wasn’t my fault. I’m not ducking and dodging nobody. 40 have come and 40 have come up short.”