Current undefeated professional boxer and reigning champion of five weight classes Floyd Mayweather Jr., has threatened to spill some "secrets" of potential boxing rival Manny Pacquiao.

"The best thing for Pacquiao to do is be quiet before he really gets exposed and I tell some things that he don't want me to tell," Mayweather said in an interview with Fight Hype.

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During the interview, he went on to hint that Pacquiao's previous conditioning coach, Alex Ariza, shared some things with Mayweather regarding the Philippine boxer.

He even went so far as to attribute all of Pacquiao's wins to Ariza, citing the fact that when Ariza was taken out of Pacquiao's fight team, he was not able to knockout any more opponents.

Mayweather gave some small glimpses of the "secrets" he was talking about. Some are small things, such as how much Pacquiao was earning when Ariza was still in his team.

He knows that the biggest check he got was US $7 million, and that Pacquiao got a US $100,000 check from Nike, with a supposed contract that was called off when he got knocked out.

Mayweather chimed in that the amount Pacquiao was earning is just a fraction of what he gets. He also claimed that the MGM Grand didn't care if promoter Bob Arum scheduled a Pacquiao fight because they already had Mayweather.

Another piece of information that Mayweather revealed is the fact that Pacquiao's team was just dragging Mayweather's name into several controversies to sell more tickets.

While these are no real bombshells, one of them stands out.

Additionally, Mayweather had hinted that Pacquiao was using Performance Enhancing Drugs (PEDs).

"It's obvious Pacquiao ain't doing the numbers that he says he's doing," Mayweather said.

He claimed that the usage of PEDs is the main reason why Pacquiao fought in Macau, China instead of the United States.

Previously, Mayweather had already suspected Pacquiao's usage of PEDs and has called him out on it.

Pacquiao filed charges against him for derogatory claims, but it was settled out of court.

TagsFloyd Mayweather Jr, manny pacquiao, Fight Hype, secrets, Alex Ariza