The Irvine native and 19-year-old qualifier, who played one semester at USC, wins a 4-hour, 49-minute thriller that ends at ...

Tien, 19, become youngest American man to reach the Australian Open's third round since Pete Sampras did so aged 18 in 1990.

Furious Daniil Medvedev battles qualifier Learner Tien, Emma Raducanu issues injury update - Raducanu set up a clash with Iga ...

Learner Tien, a 19-year-old qualifier from California, became the youngest American man to reach the Australian Open’s third ...

The final match of the day saw American Learner Tien, playing in his first major outside of the U.S. Open, upset No. 5 seed ...