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They've committed the money -- $10 million, to be exact -- but now MLB, the NFL and USADA all have to work together in their anti-doping coalition, and that might not be easy, writes ESPN.com's John Helyar.

Marion Jones was cleared, but John Helyar says the summer was a landmark in the battle against performance-enhancing drugs.

If it isn't steroids, it's HGH. If it isn't HGH, it's genetic doping. John Helyar looks at the lopsided odds in the fight against performance-enhancers in sports.