.Globe No. 1 Jannik Sinner steers clear of revocation after evaluating good for prohibited substance Yahoo SportsTennis world No 1 Jannik Sinner won't be actually hung down after examining favorable for anabolic steroid two times, ITIA points out Fox NewsATP claim on Jannik Sinner ATP TourWorld No. 1 Jannik Sinner Won't Face Revocation After Stopping Working 2 Examinations for PEDs Bleacher Report.