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,

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

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,

Daniil Medvedev is facing more fines from the Australian Open after failing to attend his post-match press conference after the defeat to American teenager Learner Tien. The fifth seed was upset 6-3 7-6(4) 6-7(8) 1-6 7-6(7) in a four hour,