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 ...

A teenager, Learnen Tien, came to Melbourne with a 0-3 score at Majors. The 19-year-old American qualified for the Australian Open main draw and scored two five-setter wins. Learnen faced world no ...

MELBOURNE, Australia — Across seven hours on Friday afternoon, the Australian Open morphed ... suffering” for his French Open title last June. Pretty soon, Tien was getting a little more ...

Two of four American men still playing in Melbourne, Irvine native Tien, 19, and Aliso Viejo native Michelsen, 20, became friends on the youth tennis circuit ...

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

Brazils' Joao Fonseca is one of the most promising young talents on the ATP Tour. The 18-year-old entered the Australian Open ...

There's been a stunner at the Australian Open, and it came from an American teenager. Qualifier and 19-year-old Learner Tien beat No. 5-ranked and three-time Australian Open finalist Daniil ...

MELBOURNE, Australia — Learner Tien, a 19-year-old qualifier and Irvine native who played briefly at USC, became the youngest American man to reach the Australian Open’s third round since Pete ...