Defending Champs Sinner, Keys Kickstart Australian Open Title Defences Amidst High-Profile Rivalries

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Defending champions Jannik Sinner and Madison Keys are set to launch their title defences at the Australian Open on Tuesday, with a host of top players joining the fray in Melbourne. Sinner, the Italian second seed, is looking to win a third consecutive Australian Open title, a feat that would make him the first player in the Open era to achieve this alongside Novak Djokovic. However, his dominance may be threatened by top-ranked Carlos Alcaraz, who is vying for his first Australian Open title and a career Grand Slam. After a disappointing loss to Alcaraz in the US Open final, Sinner has been working on adding more variety to his game. "We've focused on making the transition to the net and tweaking our serve," he said. "At the top level, these small details can make all the difference.