Video: The United States Anti-Doping Agency (USADA) is investigating Nate Diaz’s open use of a vape pen
The United States Anti-Doping Agency (USADA) is investigating Nate Diaz’s open use of a vape pen shortly after his riveting five-round fight against Conor McGregor at UFC 202.
“I can confirm that USADA is aware of the situation and is currently gathering information in order to determine the appropriate next steps,” said USADA spokesperson Ryan Madden.
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