Tennis-Sinner short on match practice but full of belief before Australian Open

Tennis - Davis Cup - Final - Australia v Italy - Palacio de deportes Martin Carpena, Malaga, Spain - November 26, 2023 Italy's Jannik Sinner reacts during his singles match against Australia's Alex de Minaur REUTERS/Violeta Santos Moura/ File photo

MELBOURNE (Reuters) - Jannik Sinner heads into the Australian Open without a competitive match under his belt this season but the world number four said on Friday he was still full of confidence following his strong finish to 2023.

The Italian stunned Novak Djokovic in the ATP Finals round-robin stage and beat the 36-year-old again in both singles and doubles at the Davis Cup, where he led Italy to a memorable triumph in November.