Daniil Medvedev's 2025 season has started in the worst way. The former world No.1 – who had disappointed expectations in 2024 by not winning a single title – had hoped to start the new year convincingly, but his run at the 2025 Australian Open was truly disastrous.

Copyright 2025 The Associated Press. All Rights Reserved. Daniil Medvedev of Russia reacts during his second round match against Learner Tien of the U.S. at the ...

Learner Tien has become the youngest American man to reach the Australian Open’s third round since Pete Sampras in 1990.

The Russian, a three-time beaten finalist, crashed out of the tournament in the second round following a five-set loss to American teenager Learner Tien.

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

While Medvedev escaped a fine for the media no-show, the Russian has now been slugged with $122,000 worth of fines for separate outbursts in the tournament. The Russian World No.5 copped a $16,000 fine for breaking a net camera after smashing his racquet into the net during his first-round win.

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,

The 19-year-old American upset fifth-seeded Daniil Medvedev in a five-set Australian Open marathon that lasted nearly five hours.

Daniil Medvedev's 2025 season has started in the worst possible way. The Russian champion – finalist at Melbourne Park in 2021, 2022 and 2024 – was eliminated already in the second round of the Australian Open by the young American talent Learner Tien (World No.121) after a very tough battle that ended late at night.

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

Daniil Medvedev was fined $76,000 at this year’s Australian Open. $10k for hitting the camera with his racquet during the 1st round. $66k for his behavior during his match against Tien & not attending press. His total winnings were $124k. pic.twitter.com/bDQ4aj064j