Learner Tien, a 19-year-old from California, became the youngest American man to reach the Australian Open's third round since 1990, upsetting No. 5 Daniil Medvedev in five sets.

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

By Ian Ransom MELBOURNE (Reuters) -Teenage qualifier Learner Tien became the youngest man to reach the Australian Open fourth round in 20 years as the future of American tennis lit up Melbourne Park ...

For the first time since 1990, two American men aged 20 and younger made the third round in Melbourne.

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Unforgettable moments of triumph and heartbreak at the Australian Open, where young talents shine and legends are made.

MELBOURNE – The Australian Open, the first Grand Slam of the year, ended on Sunday, when defending champion Jannik Sinner ...

Jannik Sinner continued to occupy the No. 1 spot in the latest ATP Rankings released on Monday after winning his second ...