Learner Tien arrived in Melbourne as the #16 seed in the Australian Open….Qualifying Tournament. Thursday, he continued high-wire act run into the Round of 32 by defeating Daniil Medvedev, the #5 seed in the Australian Open main draw.

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?

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

Learner Tien, a 19-year-old from California, became the youngest American man to reach the Australian Open's third round since 1990, upsetting No. 5 Daniil Medvedev in five sets.

The 19-year-old who was a late qualifier to the Grand Slam secured the biggest win of his young career on Thursday

Learner Tien became the first qualifier to claim an ATP top-five win at the Australian Open since Guillermo Garcia Lopez, who defeated Carlos Moya in 2005

Watch the match highlights between Learner Tien & Daniil Medvedev in Round 2 of the 2025 Australian Open Men's Singles Tournament Tennis.

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.