Umberto Ferrara, Jannik Sinner's trainer during doping case, says he warned of clostebol risks
1's positive doping tests and subsequent three-month ban from tennis. Umberto Ferrara, who is now working with Sinner's compatriot, Matteo ...
https://www.nytimes.com/athletic/6252296/2025/04/04/umberto-ferrara-jannik-sinner-positive-test-clostebol/
#doping #cleansport #antidoping #datajournalism
1's positive doping tests and subsequent three-month ban from tennis. Umberto Ferrara, who is now working with Sinner's compatriot, Matteo ...
https://www.nytimes.com/athletic/6252296/2025/04/04/umberto-ferrara-jannik-sinner-positive-test-clostebol/
#doping #cleansport #antidoping #datajournalism
Umberto Ferrara, Jannik Sinner’s trainer during doping case, says he warned of clostebol risks
“I very clearly communicated both the nature of the product, and that it must not come into contact with Jannik," Ferrara told Gazzetta.Charlie Eccleshare (The Athletic)
