Jannik Sinner said being clear in his mind that he was innocent of doping helped him play the sort of tennis that won him another Grand Slam on Sunday. 

The Italian World No. 1 tested positive for traces of the steroid clostebol last year. He was exonerated, but the World Anti-Doping Agency appealed and is seeking a ban of up to two years, with a hearing scheduled at the Court of Arbitration for Sport (CAS) for April. “I mean, what happened, happened,” he said after taming Alexander Zverev 6-3, 7-6 (7/4), 6-3 to successfully defend his Australian Open title.