The 23-year-old Italian, who won the Australian Open last month, is suspended from 9 February until 4 May ... substance when she was world number one. News of Sinner's positive tests was announced ...

Jannik Sinner, the world number one and a three-time grand slam champion, will be out of action for three months after accepting a ban. Jannik Sinner has accepted a three-month suspension over two ...