The startup Olympic-style sports festival promising no drug testing filed an $800 million antitrust lawsuit against its detractors Wednesday for what it claims is an illegal campaign to make athletes boycott its event.

The Enhanced Games filed the lawsuit in federal court in New York, naming World Aquatics, USA Swimming and the World Anti-Doping Agency as defendants. It seeks damages and injunctive relief to stop what it says is the defendants' illegal campaign.

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