Jannik Sinner of Italy poses with Norman Brookes Challenge Cup the morning after defeating Alexander Zverev of Germany in the men's singles final at the Australian Open tennis championship in Melbourne, Australia.

Jannik Sinner of Italy poses with Norman Brookes Challenge Cup the morning after defeating Alexander Zverev of Germany in the men's singles final at the Australian Open tennis championship in Melbourne, Australia.

Jannik Sinner of Italy poses with Norman Brookes Challenge Cup the morning after defeating Alexander Zverev of Germany in the men's singles final at the Australian Open tennis championship in Melbourne, Australia.

Jannik Sinner of Italy kisses Norman Brookes Challenge Cup the morning after defeating Alexander Zverev of Germany in the men's singles final at the Australian Open tennis championship in Melbourne, Australia.

Jannik Sinner of Italy poses with Norman Brookes Challenge Cup the morning after defeating Alexander Zverev of Germany in the men's singles final at the Australian Open tennis championship in Melbourne, Australia.

Jannik Sinner of Italy poses with Norman Brookes Challenge Cup the morning after defeating Alexander Zverev of Germany in the men's singles final at the Australian Open tennis championship in Melbourne, Australia.

Jannik Sinner, right, of Italy holds the Norman Brookes Challenge Cup after defeating Alexander Zverev of Germany in the men's singles final at the Australian Open tennis championship in Melbourne, Australia.