The day that welterweight champion Georges “Rush” St-Pierre becomes the worlds best pound-for-pound fighter by defeating the man considered the number one by many (Anderson Silva) during a special “Primetime” edition of MMAjunkie Radio ( this past Friday.

This is what drives the Canadian mixed martial artist. Traditional fame and money is not a real concern said St-Pierre.

“People are going to be shocked,” St-Pierre said of his tentative retirement plan.

St-Pierre (20-2 MMA, 15-2 UFC) currently is in Las Vegas wrapping up a coaching gig on “The Ultimate Fighter 12” opposite top contender Josh Koscheck (15-4 MMA, 13-4 UFC). The two are expected to meet sometime at the end of the year in a traditional season-ending fight between “TUF” coaches.

Beyond that, he’s done some additional planning. In fact, St-Pierre said his potential retirement plan recently came about while he was setting goals for his remaining career.

“Growing up in my career, I always fix my goals very high,” he said. “And every time I achieve one of my [goals], I fix another goal to reach. It’s important as a martial artist [never to be] satisfied because otherwise there is no point to keep doing what you’re doing.”

As to what goals remain, there are a few. St-Pierre has achieved what he initially set out to do: become a professional fighter, become a UFC fighter, and finally, become a UFC champion.

Being considered the best overall fighter in the world? That’s the one goal he thinks currently is unmet.

That doesn’t mean he’s complacent, of course. In his second run as welterweight champion, St-Pierre has taken on four consecutive contenders and soundly beaten them all. At the end of the year, he will attempt to tie former champion Matt Hughes’ record of five consecutive title defenses when he meets Koscheck.

Still, some fans believe St-Pierre already has cleaned out his division. He’s already beaten all the division’s top contenders – Koscheck, Jon Fitch, Thiago Alves and Dan Hardy – and some point to a middleweight showdown against current champion Anderson Silva as a final hurdle to the pound-for-pound crown. Silva is still widely considered to be the holder of that unofficial title. St-Pierre knows he could snatch it away by beating him.

But St-Pierre said a move up in weight would likely come near the end of his career, and it won’t come anytime soon.

“If I go up in weight, it’s going to be hard to go down,” he said. “If I put on lean muscle like I already did recently … it’s going to be hard to come back down. So it’s not like I go up and I go down. I have to be very careful with what I do.”

Still, if St-Pierre takes “a couple” of welterweight fights in the next year or two, and if Silva is still the pound-for-pound king at that point, the French-Canadian then would consider moving up to fight him. And if he defeats Silva, that’s a win worthy of retirement, he said.