I have no idea whether the claim the U.S. Anti-Doping Agency makes that it has physical evidence that Lance Armstrong used performance-enhancing drugs is true or not. Given the agency’s reluctance to show its cards, particularly now that Armstrong has said he won’t contest the charges, I don’t necessarily trust it. I find myself sympathizing with Armstrong here:

“There comes a point in every man’s life when he has to say, ‘Enough is enough.’ For me, that time is now,” Armstrong said in a statement sent to The Associated Press. He called the USADA investigation an “unconstitutional witch hunt.”

I find this statement from the USADA’s Travis Tygart way too self-satisfied, too:

“It is a sad day for all of us who love sport and athletes,” Tygart said. “It’s a heartbreaking example of win at all costs overtaking the fair and safe option. There’s no success in cheating to win.”

Here, Tygart, let me offer you a pat of butter to place in your mouth.

This one’s a little smug, too:

USADA reacted quickly and treated Armstrong’s decision as an admission of guilt, hanging the label of drug cheat on an athlete who was a hero to thousands for overcoming life-threatening testicular cancer and for his foundation’s support for cancer research.

I’m not sure Armstrong’s decision not to keep up a legal fight with an agency he clearly feels is out of control and acting on a vendetta against him should be construed as an admission of anything other than a buildup of years of frustration spilling over.

I also agree with Armstrong that the USADA has no authority to strip him of his titles. USADA is not the sanctioning body for bicycle racing. UCI, the International Cycling Union, is.