The final match of the day saw American Learner Tien, playing in his first major outside of the U.S. Open, upset No. 5 seed Daniil Medvedev in a five-set classic, 6-3, 7-6, 6-7, 1-6, 7-6, that ended at 2:54 a.m. local time. Medvedev had reached three of the past four Australian Open finals, but could not fend off a ferocious Tien.

World number one and defending champion Jannik Sinner roared back to surge into the Australian Open third round on Thursday as Iga Swiatek set up a showdown with Emma Raducanu. Taylor Fritz was an emphatic winner in his pursuit of a maiden major title but exciting 18-year-old Joao Fonseca was edged out in a five-set thriller.

Defending champion Jannik Sinner lost his first set since October but recovered to beat Tristan Schoolkate and reach the third round of the Australian Open.

(AP Photo/Vincent Thian) Jannik Sinner, of Italy, holds up the championship trophy after defeating Taylor Fritz, of the United States, in the men’s singles final of the U.S. Open tennis championships, Sunday, Sept. 8, 2024, in New York. (AP Photo/Julia N ...

Taylor Fritz has no plans to deviate from his usual Grand Slam approach when he begins his Australian Open campaign and says he is focused on taking it one game at a time as he chases a first major title.

The men's world No. 1 could face a two-year ban. Here's what to know about the doping proceedings against him so far

Jannik Sinner’s relationship with fellow tennis star and women’s world #14, Anna Kalinskaya, first made headlines in May, after Sinner confirmed the budding romance with local press. Reiterating his usual tone in relation to his off-court life, Sinner told media that while he was indeed “with Anna” they preferred to “keep everything confidential”.

The two best men's players in the world are reconfiguring the sport before their opponents' eyes. They don't know what to do about it

In the men's singles category, Jannik Sinner, Taylor Fritz and Daniil Medvedev will be in action, while Iga Swiatek, Elena Rybakina and Ons Jabuer will also play their respective matches.

After two decades, the Federer/Nadal/Djokovic dynasty is ending. Are Jannik Sinner and Carlos Alcaraz the new ‘untouchables’?

Day 5 of the Australian Open 2025 was packed with unforgettable moments as Learner Tien shocked the tennis world by defeating Daniil Medvedev in a thrilling five-set battle. Jannik Sinner and Taylor Fritz dominated their matches,