The top player in the world, Jannik Sinner, has been exonerated of all charges following two positive tests in March for an illegal substance. The Italian athlete tested positive for low levels of clostebol, a steroid used for muscle growth, during Indian Wells. Low amounts of the same metabolite were also detected in a second sample that was collected eight days later.Sinner successfully contested the automatic application of a provisional suspension, allowing him to resume play.t