Learner Tien stages Australian Open upset of No. 5 Daniil Medvedev. Who is the American teenager?
U.S. 19-year old Learner Tien defeated No. 5 Daniil Medvedev in a fifth set tiebreaker in the Australian Open, making history ...
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Who is Learner Tien? US teen who beat Daniil Medvedev and taking Australian Open by storm
Learner Tien has announced himself on the world stage with a huge upset victory over world No. 5 Daniil Medvedev, emerging as ...