UFC 152: Rory MacDonald accepts B.J. Penn's challenge to 'clean up the sport,' agrees to VADA anti-doping test

SYDNEY AUSTRALIA - FEBRUARY 23: BJ Penn of the USA speaks during a Press Conference ahead of UFC 127 at Star City on February 23 2011 in Sydney Australia. (Photo by Ryan Pierse/Getty Images)

If there is anything "funny" going on up at that TRISTAR gym up in Quebec, Canada, B.J. Penn is going to do his best to get to the bottom of it before he draws the curtain on his mixed martial arts (MMA) career (again).

Even if it means challenging his UFC 152 counterpart, Rory MacDonald, to an independent drug test -- beyond the long and careful reach of Ultimate Fighting Championship (UFC) -- prior to their 170-pound showdown at the Air Canada Centre in Toronto, Ontario, Canada, on Sept. 22, 2012.

Penn took to Twitter.com (what else?) to float the VADA-inspired idea across the Pacific Ocean, in real-time, and personally deliver his challenge to "Ares," who quickly responded, saying he thought it was a "great idea." In his reply, MacDonald even tagged UFC President Dana White, who most likely thinks its quite the opposite.

Crazy kids.

There's obviously nothing wrong with trying to "clean up the sport," but White and Co. could take issue with its fighters going Broken Arrow and undermining the process. A process, remember, that White himself vowed to improve in the wake of Alistair Overeem and everything that led up to the UFC 146 fiasco.

For his part, Penn mentioned that the Voluntary Anti-Doping Association (VADA) -- an independent organization founded to offer and promote effective anti-doping programs in boxing and MMA -- "came to him" with the idea.

Coincidence?

Penn has alluded to the fact that his nemesis, Georges St. Pierre -- who essentially serves as MacDonald's MMA mentor -- might have been ingesting some banned "vitamins," but he eventually apologized for those unfounded allegations.

Probably because "Rush" has never failed a UFC drug test ... or any such test in his MMA career.

But, perhaps, those tests were not comprehensive enough and missed something. Perhaps St. Pierre really is on some undetectable designer sauce and he's sharing it with MacDonald on the rest of the crew up at TRISTAR.

And if he is, Penn is going to get to the bottom of it.

The good news for White is that the results will be released "after the fight" to ensure that they don't mess up the fight card ... because that never happens.

What a potential nightmare.

For more on the UFC 152 showdown between B.J. Penn vs. Rory MacDonald be sure to hit up our complete fight archive right here.

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