MELBOURNE - American qualifier Learner Tien became the youngest man to reach the Australian Open fourth round in 20 years as he beat an ailing Corentin Moutet 7-6(10) 6-3 6-3 on Saturday, continuing the teenager's fairytale run at Melbourne Park.

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

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.

American qualifier Learner Tien, youngest man in 20 years to reach Australian Open fourth round, continues fairytale run.

Learner Tien has become the youngest American man to reach the Australian Open’s third round since Pete Sampras in 1990

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.

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

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.

Teenage qualifier Learner Tien on Saturday became the youngest man to reach the Australian Open fourth round since Rafael Nadal in 2005 when he overcame injured Frenchman Corentin Moutet. Tien is one of a trio of teens who set the Australian Open alight with wins over top-10 players,

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.

Learner Tien is the youngest American man to reach the third round of the Australian Open since an 18-year-old Pete Sampras in 1990.