Learner Tien achieved an unprecedented feat in the past 20 years following his stunning victory over Daniil Medvedev in the ...
American qualifier Learner Tien shocked the tennis world on Thursday when he upset last year's Australian Open runner-up Daniil Medvedev in a nearly five-hour, five-set match in the second round.
Learner Tien has become the youngest American man to reach the Australian Open’s third round since Pete Sampras in 1990.