World number 121 Learner Tien of USA knocked world number five Daniil Medvedev out of the Australian Open 2025 after around 3 am (local time) following a five-set match in the second round. The 19-year-old beat Australian Open 2024 runner-up Medvedev with a scoreline of 6-3, 7-6(7-4), 6-7(8-10), 1-6, 7-6(10-7). The match lasted four hours and 49 minutes.