Learner Tien beats Daniil Medvedev and is the youngest US man in Australia’s 3rd round since Sampras
Learner Tien has become the youngest American man to reach the Australian Open’s third round since Pete Sampras in 1990.
Learner becomes master: Meet 19-year-old Learner Tien who stunned Daniil Medvedev at the Australian Open
USA wildcard Learner Tien has stunned the world by upsetting last year's runner-up Daniil Medvedev after a gruelling five-set ...