Melbourne, Jan 26 (NationPress) Jannik Sinner faced some tough moments but ultimately demonstrated his prowess by defeating fellow Italian Luciano Darderi with scores of 6-1, 6-3, 7-6(2), securing his place in the men's singles quarterfinals of the Australian Open in Melbourne on Monday.

The No. 2-ranked player in the ATP Rankings rebounded with determination, merging relentless precision with a clinical edge that kept the tension at bay as he continued his journey deeper into this year's first Grand Slam.

The two-time defending champion had previously struggled with cramps against Eliot Spizzirri in the last round but was fortunate to come out unscathed. On this day, Sinner managed to navigate a nervy finish against Darderi, as both his momentum and physical condition briefly seemed at risk.

"We are good friends off the court. I’m thrilled to have finished it in three sets," remarked Sinner, who unleashed 19 aces as he intensified his pursuit of a third consecutive Australian Open title.

Contrastingly, it was a much less dramatic encounter for Sinner, who previously battled cramps during his four-set win over Spizzirri. He is set to face American eighth seed Ben Shelton, who advanced with a four-set victory over three-time Grand Slam finalist Casper Ruud.

Fifth-seeded Lorenzo Musetti made a notable impression with a 6-2, 7-5, 6-4 victory against ninth-seeded American Taylor Fritz, earning a spot in the quarterfinals against 24-time Grand Slam champion Novak Djokovic.

"I arrived with a different mindset, and I’m very pleased," stated Musetti, who delivered 13 aces.

Meanwhile, the 38-year-old Djokovic received valuable extra rest after 16th seed Jakub Mensik withdrew from their fourth-round match due to an injury.

"He didn’t have to play today, so it’s safe to say he won’t be fatigued," Musetti noted about the 10-time Australian Open champion.

On the women’s side, China’s Wang Xinyu put up a valiant fight but ultimately fell to American fourth seed Amanda Anisimova in straight sets on Monday.

Day nine continued the fourth-round action with Wang, representing China, but Anisimova eventually seized control under the sun at John Cain Arena, winning 7-6 (4), 6-4 in one hour and 42 minutes.

"I’m feeling fantastic. What a battle in challenging conditions against a formidable opponent," Anisimova expressed, as she seeks her first major title following her finals appearances at last year’s Wimbledon and US Open.

Ranked No.46, Wang leaves Melbourne with a boost of confidence after her last-16 finish at this Grand Slam and a runner-up finish to Elina Svitolina in Auckland.

The Chinese player is also expected to improve to 33 in the WTA rankings, just one spot shy of her career-high achieved in 2023.

Anisimova will next face compatriot Jessica Pegula, who ousted defending champion Madison Keys in straight sets.

Pegula completed the 6-3, 6-4 victory over her close friend in just 78 minutes.

It was a disappointing conclusion for titleholder Keys, who struggled to reclaim the remarkable form that led her to dethrone two-time champion Aryna Sabalenka in last year’s final.

"Just one of those days where I feel like Jess outplayed me, and I’m able to leave with my head held high," she reflected.

Second seed Iga Swiatek effortlessly defeated Australian qualifier Maddison Inglis 6-0, 6-3, setting up an exciting quarterfinal against former Wimbledon champion Elena Rybakina, who had previously triumphed over 21st seed Elise Mertens.

"I felt quite confident from the start," Swiatek stated, as a six-time Grand Slam champion pursues the only major title that has eluded her.

In the women’s doubles third round, China’s Guo Hanyu and Kristina Mladenovic of France, the 16th seeds, were upset by Australian wildcards Kimberly Birrell and Talia Gibson in a roller-coaster three-set battle.

In the mixed doubles second round, China’s Zhang Shuai and her German partner Tim Putz, seeded sixth, lost 10-8 in a thrilling match tiebreak against Katerina Siniakova and Sem Verbeek.

Tournament organizers are preparing for another oppressive heatwave on day 10, following extreme conditions that previously disrupted the event.

World No.1 Aryna Sabalenka's captivating matchup with teenager Iva Jovic headlines the commencement of quarterfinal action on Tuesday.

The men’s top seed Carlos Alcaraz will have to overcome the home crowd against local favorite Alex de Minaur, while title contenders Coco Gauff and Alexander Zverev will also be in the spotlight.