Learner Tien, a 19-year-old from California, toppled No. 5 seed Daniil Medvedev at the Australian Open. He’s now the youngest American man to make it this far at a major in nearly two decades.

American qualifier Learner Tien shocked the tennis world on Thursday when he upset last year's Australian Open runner-up Daniil Medvedev in a nearly five-hour, five-set match in the second round. Tien took an early two-set lead (6–3,

Learner Tien pulled off a massive upset against Daniil Medvedev at the Australian Open. So, who is Tien, the 19-year-old out of California?

At the age of 19, Learner Tien defeated Daniil Medvedev in a five-set thriller that finished just before 3 a.m. in Melbourne.

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).

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, in five sets. Tien won 6-3,

In the Australian Open Round of 64 on Wednesday, we have a matchup featuring No. 5-ranked Daniil Medvedev against No. 121 Learner Tien.In Tien’s most recent competition, he fell to Arthur

Last year's runner-up Daniil Medvedev was dumped out in the Australian Open second round by 19-year-old qualifier Learner Tien in a massive Melbourne shock at close to 3:00 am Friday.In his debut Australian Open,

Three-time Australian Open finalist Daniil Medvedev's hopes for a fourth final were dashed in a stunning second-round exit on Thursday, as he was defeated by American qualifier Learner Tien in a dramatic five-set contest at Margaret Court Arena.