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Tygart and officials with the World Anti-Doping Agency have recklessly pursued Armstrong for several years in a personal quest to catch him despite Armstrong’s hundreds of negative drug tests. Tygart was named a co-defendant in the lawsuit.

Also charged by USADA are former Armstrong team manager Johan Bruyneel and several team doctors and associates. None of them are included in Armstrong’s lawsuit.

Armstrong’s lawsuit says he faces irreparable harm if the case is allowed to go forward to arbitration because USADA rules prevent him from being able to mount a legitimate defense.

“It is a testament to USADA’s brazenness and callous disregard for its own mission that it seeks to strip Mr. Armstrong of his life’s work,” the lawsuit says.

There was no immediate indication when a judge would rule. The case was filed in U.S. District Court in Austin.