On Dec. 8, 2012, the boxing world was shook to its core as one of the most polarizing fighters of our generation, Manny Pacquiao, was knocked out cold for the first time in his illustrious career on HBO (watch it here), thanks to a huge right hand by his long-time rival, Juan Manuel Marquez.

In the waning moments of the sixth round in what was the fourth match up between the two scrappy prize fighters, Marquez connected with a clean short right hand that sent the Filipino crashing to the canvas, leaving the former champion unconscious for a couple of minutes that seemed like an eternity for his millions of loyal fans.

On the flip side, after three previous failed attempts that resulted in one draw and two decision losses, Marquez finally did what he so desperately wanted to do for the past eight years, and that's get a decisive win over "Pacman."

And he was determined to not let it go to the judges scorecards this time around.

Marquez left no doubt as to who the better fighter was that night, leaving the MGM Grand Garden Arena in Las Vegas, Nevada, with bragging rights and a clear victory over his arch-nemesis. But, how did he get it done? Had "Dinamita," after spending so much time inside the squared circle with Pacquiao, figured out his weakness? Had he finally got his timing down, allowing him to connect the final and decisive blow? Was it luck? Was it pure skill?

If you ask Chael Sonnen, it was none of the above. The former No. 1 two-time Ultimate Fighting Championship (UFC) middleweight contender revealed his unfounded theory as to why Marquez finally got the best of Pacquiao on the "Jim Rome on Showtime" show last night (Dec. 26, 2012) :

"Pacquiao got hit by a guy who miraculously went through puberty a second time at 39 years old. He got hit by a guy that showed up with more power at 39 than he had in any of the previous fights. He had a 6 pack that he never had before. There's two tests that you have, Jim. You've got the pee test, but you've also got the visual test. When you take your robe off and you get in the ring that's your first test. And to act as if all of us didn't go, 'Something's going on there.' No, I haven't said that (he's on PEDs), but I sure came close, didn't I? I know that Freddy Roach did. I know Freddy Roach said, 'If that body's clean, I kiss your ass.' But you gotta understand, all substances aren't illegal. Did he take something? Sure, he did. Did he take something illegal? Well, according to the test, no.I just know you don't go through puberty twice and I'll leave it at that."

Though "The American Gangster" -- who is Testosterone Replacement Therapy (TRT) patient himself -- stopped short of flat out saying Marquez took an illegal substance that helped him prevail over his opponent in "Sin City," it doesn't take a genius to see what Sonnen is implying.

Nevertheless, both Marquez and Pacquiao, two men who have faced performance enhancing drug (PED) abuse allegations in the past, passed their respective post-fight drug tests administered by the Nevada State Athletic Commission (NSAC).

According to Marquez, that was one test he had no worries of failing (via Yahoo! Sports):

"As far as people thinking I am taking steroids? I would take the test. Let them take my blood. I don't care. [I would do it] just to shut everybody up. Of course my fight tests have always been clean. I don't know how those rumors get started."

In this case, Juan, it appears that the pot met the kettle on "Showtime."