World No. 1 Jannik Sinner, who is about to return to action after a three-month doping ban, thought about walking away from tennis even while successfully defending his Australian Open title, but is coming back with a new mentality.
Sinner accepted a three-month ban in February after a settlement with the World Anti-Doping Agency, which had appealed to the Court of Arbitration for Sport against an independent tribunal¡¯s decision in August to clear him.
The Italian had tested positive for anabolic agent clostebol, which Sinner said entered his system from a member of his support team through massages and sports therapy.
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