.World No. 1 Jannik Criminal avoids suspension after testing positive for outlawed compound Yahoo SportsTennis planet No 1 Jannik Sinner won't be hung down after testing positive for steroid twice, ITIA states Fox NewsATP declaration on Jannik Sinner ATP TourWorld No. 1 Jannik Evildoer Won't Face Suspension After Failing 2 Tests for PEDs Bleacher Record.