Jannik Sinner claims innocence as ATP head confirms doping investigation follows protocol
[ad_1] Top-ranked tennis player Jannik Sinner addressed doping allegations on Friday, asserting his innocence while ATP chairman Andrea Gaudenzi affirmed the integrity of the process.Sinner, currently world number one, tested positive twice for the steroid clostebol in March.The International Tennis Integrity Agency (ITIA) cleared Sinner, accepting his explanation that the substance entered his system through…