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

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

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.

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

Daniil Medvedev’s “Dead Fish” celebration at the end of the 2021 U.S. Open final stands out as among the most unusual and unexpected reactions to a major tennis championship

The former world No. 1 smashed a net camera in his first-round match, and racked up $66,000 in fines for multiple code violations in his second-round loss to American teenager Learner Tien.

Daniil Medvedev was fined a total of $76,000 for his camera and racket-smashing outbursts during the first two rounds of the Australian Open.

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.

Daniil Medvedev earned A$200,000 (roughly £102,000) for reaching the second round of the 2025 Australian Open, but most of that money will go back to organisers as he has been hit with a staggering fine for a couple of offenses during his two matches.