Novak Djokovic was at the centre of another Australian Open row on Monday while Jannik Sinner needed medical attention in fierce heat to battle into the quarter-finals and Iga Swiatek

Novak Djokovic was at the center of another Australian Open row on Monday while Jannik Sinner needed medical attention in fierce heat to battle into the quarterfinals and Iga Swiatek won easily. But American teenage qualifier Learner Tien’s fairytale run is over after he suffered a thigh problem in a four-set defeat to Italy’s Lorenzo Sonego.

Madison Keys and Elina Svitolina faced off in a gripping quarter-final match at the Australian Open. Svitolina clinched the first set, but Keys leveled with a win in the second. The match, held at Rod Laver Arena,

Novak Djokovic was at the centre of another Australian Open row on Monday while defending champion Jannik Sinner needed medical attention in fierce heat to battle into the quarter-finals.

American Madison Keys first made the Australian Open semifinals 10 years ago. A decade on, she hopes to do it again, but she'll have to go through Ukraine's Elina Svitolina.

Carlos Alcaraz had Novak Djokovic on his heels early and lamented not being able to put him away in the Australian Open quarterfinals.

Novak Djokovic was at the centre of another ... for a second successive day, Ukraine's Elina Svitolina beat Veronika Kudermetova -- then declined to shake the Russian's hand.

Ben Shelton and Madison Keys achieved a joint milestone for American tennis at the Australian Open, one last accomplished by Andy Roddick and Serena Williams.

Want to catch the action live? You're going to have to stay up very late (or get up very early) if you're a U.S.-based fan.

Madison Keys matched her best Grand Slam performance in seven-plus years, as the 19th-seeded U.S. player overtook 28th-seeded Elina Svitolina of Ukraine 3-6, 6-3, 6-4 in the quarterfinals of the Australian Open on Wednesday in Melbourne.