Jannik Sinner's rise has caused a big shake-up on the men's tour, which has found a new leader capable of being competitive ...

Jannik Sinner reacts during the men s singles 3rd round match between Jannik Sinner of Italy and Marcos Giron of the United States at Australian Open tennis tournament in Melbourne, Australia ...

Jannik Sinner of Italy plays a backhand return to Ben Shelton of the U.S. during their semifinal match at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 24 ...