Way before the disappointment dubbed "Fight of the Century" came into fruition, Floyd Mayweather Jr. often suggested that Manny Pacquiao and his rise through and above eight boxing divisions were a result of PED use. Recently, though, a report surfaced that the situation may actually be the reverse as Thomas Hauser of SB Nation notes that Mayweather received an illegal IV before his May fight against Pacquiao to help with dehydration.

The report states that the United States Anti-Doping Agency officials found evidence of the undefeated boxer using an IV after the weigh-ins. And while the details behind the findings remain unclear, what is clear is that if Mayweather did receive the injections, he would be in violation of the World Anti-Doping Agency regulations, as it does not permit boxers to receive such injections. As noted by Bleacher Report, injections like the one Mayweather supposedly used can be used to mask other banned substances.

As Hauser reports, Mayweather's camp received an exception from the USADA, but the team did not apply for the waiver until 18 days after the fight, which means it was not in place and applicable when "Money" won a unanimous decision against the Filipino.

Hauser also details that while Mayweather has built and promoted his reputation as a clean fighter, Mayweather Promotions maintains a "cozy" relationship with the USADA. Hauser opines that Mayweather doesn't seem subject to true 365-day testing, and that the anti-doping agency and his camp come together before his fights and begin random testing programs at Mayweather's discretion.

Victor Conte - one of the main players in the infamous BALCO scandal, who is now an advocate for stricter testing says: "The benefits that an athlete retains from using anabolic steroids and certain other PEDs carry over for months. Anybody who knows anything about the way these drugs work knows that you don't perform at your best when you're actually on the drugs. You get maximum benefit after the se stops."

"I can' tell you what Mayweather is and isn't doing. What he could be doing is this: The fight is over. First, he uses these drugs for tissue repair. Then he can stay on them until he announces his next fight, at which time he's the one who decides when the next round of testing starts. And by the time the testing starts, the drugs have cleared his system."

Bleacher Report notes that Pacquiao's camp suggested a $5 million fine if either fighter tested positive for PEDs. Mayweather's camp declined.