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

American teenager Learner Tien produced arguably the biggest shock of the Australian Open so far as he defeated last year’s runner-up Daniil Medvedev in five sets, 6-3, 7-6 (4), 6-7 (8), 1-6, 7-6 (7).

Australia — Learner Tien, a 19-year-old qualifier from California, notched the biggest upset of the 2025 Australian Open to date by beating No. 5 seed and 2024 finalist, Daniil Medvedev ...

The 19-year-old American upset fifth-seeded Daniil Medvedev in a five-set Australian Open marathon that lasted nearly five ...

Qualifier and 19-year-old Learner Tien beat No. 5-ranked and three-time Australian Open finalist Daniil Medvedev in a five-set thriller 6-3, 7-6 (4), 6-7 (8), 1-6, 7-6 (7) for the biggest win of ...

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 ...

Copyright 2025 The Associated Press. All Rights Reserved. Daniil Medvedev of Russia reacts during his second round match ...

American Learner Tien described his "surreal" experience at the Australian Open, where he reached the fourth round after ...

Daniil Medvedev has been fined for misconduct after his shocking defeat in the second round of the Australian Open 2025.

Learner Tien has become the youngest American man to reach the Australian Open’s third round since Pete Sampras in 1990. MELBOURNE, Australia — Learner Tien, a 19-year-old qualifier from ...

Learner Tien of the U.S. gestures during his second round match against Daniil Medvedev of Russia at the Australian Open tennis championship in Melbourne, Australia, Thursday, Jan. 16, 2025.