Learner Tien, a Vietnamese American tennis player who is just 19 years old, has advanced to the fourth round of the ...

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 and Alex Michelsen were born about 15 months apart and first crossed paths a decade ago when they were playing ...

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

American qualifier Learner Tien shocked the tennis world on Thursday when he upset last year's Australian Open runner-up ...

American teenager Learner Tien produced arguably the biggest shock of the Australian Open so far as he defeated last year’s ...