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ITIA Clears ATP Pro’s Suspension Linked to Same Substance as Jannik Sinner

Clostebol shook the tennis world after Jannik Sinner’s twin positives at Indian Wells led to a three-month ban following a WADA appeal. Now, the same substance returns to the spotlight, as Guatemala’s Juan Sebastián Domínguez Collado earns the benefit of doubt and walks free from a doping charge under unusual circumstances. Juan Sebastián Domínguez Collado’s case became one of the most unusual doping stories in recent tennis. The International T…

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Juan Sebastian Dominguez Collado has written a small page in the history of anti-doping: his is (and will remain) the first case of non-Italian tennis player positive to the clostebol announced by ITIA. And we are moderately sure that he can also be going back in time, when it was ITF to deal with the violations. Sebastian would have gladly done without this primacy, but all is well what ends with an acquittal or, correctly, with a verdict of No…

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TennisUpToDate.com broke the news in on Tuesday, February 10, 2026.
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