A three-time finalist in the last four editions of the Australian Open, Daniil Medvedev did not make it past the third round in 2025. On Thursday, the Russian was beaten in five sets against Learner Tien (6-3, 7- 6 [4]6-7 [8]1-6, 7-6 [7]), a young 19-year-old American from qualifying, in a match which ended at almost 3 a.m.