Taylor Fritz, the highest-seeded American man at the Australian Open, needed only 82 minutes to defeat Cristian Garin on Thursday and advance to the third round.

Jannik Sinner continues Australian Open defence with straightforward win; Gael Monfils, 38, dumps out fourth seed Taylor Fritz; American teen sensation Learner Tien also progresses in Melbourne; watch

Emma Raducanu suffered her worst ever loss at a Grand Slam at the hands of Iga Swiatek. The five-time Major winner thrashed Raducanu 6-1 6-0 in just 70 minutes. But Raducanu defended herself, claiming the scoreline was "harsh".

Follow live text and radio commentary featuring Emma Raducanu, Iga Swiatek and Jannik Sinner in the Australian Open in Melbourne, Australia.

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. At such a critical moment in US history, we need reporters on the ground. Your donation allows us to keep sending journalists to speak to both sides of the story.

In other men's results, Gael Monfils joined Roger Federer as the only men to reach the Australian Open's fourth round at age 38 or older since the tournament field expanded to 128 players in 1988, coming back to beat No. 4 seed Taylor Fritz 3-6, 7-5, 7-6 (1), 6-4.

Gael Monfils rallied from a set down to claim a thrilling 3-6, 7-5, 7-6 (1), 6-4 win over American Taylor Fritz in a third-round match at the Australian Open.

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 champ Jannik Sinner drops set for first time since October, but rallies for win; American Danielle Collins plays villain while advancing.

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.

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”.