Joao Fonseca, Alex Michelsen, Learner Tien and Arthur Fils are four names to remember, following delightful displays during the opening week of the Australian Open.

American Learner Tien upset No. 5 seeded Daniil Medvedev 6-3, 7-6 (4), 6-7 (8), 1-6, 7-6 (10-7) at the 2025 Australian Open, in a 4-hour, 49-minute match that began Thursday night and ended early Frid

Learner Tien, a 19-year-old, became the youngest American man since Pete Sampras to reach the Australian Open third round, beating Daniil Medvedev. The marathon match lasted nearly five hours. Tien's audacity and skill led to an unexpected victory against a seasoned player,

Learner Tien beats Daniil Medvedev, is youngest American man in Australian Open’s 3rd round since Pete Sampras in 1990

Then, Rafael Nadal wrote the history of men's tennis, winning his 2nd AO title and his 21st Slam, while Ashleigh Barty won a Slam for the Australian, in Melbourne, after years, in 2022. Then it was the turn of Nole and Sinner, in the last two years, of Sabalenka both in 2023 and 2024.

The Irvine native and 19-year-old qualifier, who played one semester at USC, wins a 4-hour, 49-minute thriller that ends at nearly 3 a.m. in Melbourne

U.S. 19-year old Learner Tien defeated No. 5 Daniil Medvedev in a fifth set tiebreaker in the Australian Open, making history in Melboune.

American teen Learner Tien pulled off the biggest upset so far at the 2025 Australian Open, ousting Russian Daniil Medvedev -- the No. 5 player in the world -- in a 4-hour, 49-minute thriller at Margaret Court Arena.

And American Alex Michelson has followed in the footsteps of Pete Sampras and Andre Agassi after reaching the last 16 of a Grand Slam for the first time. Express Sport rounds up what else you may have missed overnight at the Australian Open... Emma is out ...

On late Thursday night, 19-year-old American Learner Tien taught three-time Australian Open runner-up and fifth seed Daniil Medvedev a thing or two, defeating him 6-3, 7-6 (7-4), 6-7 (8-10), 1-6, 7-6 (9-7) in a four-hour-49-minute marathon that finished just short of 3am (local time) in Melbourne.

Young gun Alex Michelsen has achieved a 35-year American first with an inspired run to the Australian Open's last 16 at Melbourne Park.