Roger feder has had his say on janx siners doping saga. Roger feder has become the latest tennis star to weighin on janx siners doping Saga the Italian twice tested positive for the ban substance colable in March of this year but successfully appealed his provisional suspensions after arguing that the positive test were the result of contamination last month an independent tribunal ruled that he bore no fault or negligence for the two anti-doping violations Federer has now called out the inconsistencies in Sinner's case and claimed that it brought unwanted noise to the sport last month Center and the international tennis Integrity agency announced the news of the Italian's positive tests and the result of his independent tribunal hearing the tribunal was held on August 15th with the news made public on August 20th although the two positive tests came in March it was the first time the tennis world learned of Sinner's anti-doping violations it prompted questions over whether sinner was treated unfairly with other players often forced to serve provisional suspensions while they await a final decision however official documents from the hearing revealed that CER appealed his two provisional bands when he was first notified of them earlier in the year as three experts found his explanation of contamination plot