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

There are three American men aged 23 and under in the second week of a Grand Slam. That hasn't happened since 2003 ...

Learner Tien stunned the tennis world on Thursday, claiming an upset second round victory over Daniil Medvedev at the Australian Open. The teenage talent beat the No. 5 seed in a thrilling five ...

Two of four American men still playing in Melbourne, Irvine native Tien, 19, and Aliso Viejo native Michelsen, 20, became ...

Learner Tien speaks to interviewers the way he plays tennis: without a lot of wasted motion. On Saturday, the 19-year-old was told that that the last player his age to reach the fourth round at ...

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 (No. 121) will meet Lorenzo Sonego (No. 55) in the Round of 16 at the Australian Open on Sunday,9.Sonego ...

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

I guess the entertainment factor drew me in and I obviously started understanding tennis better watching all these guys. I really appreciated watching these matches a lot more," Learner Tien said.