In Today's TDN:

TDN MAGAZINE, As the Science Gets Better, Catching the Cheats Becomes Easier: Part V of A Painful Truth: No matter the sport, cheaters have always stayed one step ahead of those trying to catch them by doping with as-yet undetectable products. But what if authorities didn't need to determine what the products were, only what the specimin should look like if unaltered by any drug? Meet the biological passport, and Travis Tygart, the man who has successfully routed out two of sports' most defiant cheats, Lance Armstrong and Marion Jones, neither of whom had ever tested positive. Download part V by clicking here.

In Today's TDN:

Posted: 8:27 PM ET

Game On Dude

Gulfstream will host very competitive renewals of the GI Kitten's Joy Gulfstream Park Turf H. and GI Donn H. next Saturday--find out which expected runners worked Sunday and how they went... We've also got updates on the top two finishers from the GIII Withers S... Plus Justina Severni reviews My Buddy, King of the Hill, which chronicles author Frank Pagano's relationship with trainer and convicted murderer Buddy Jacobson.

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