Daniil Medvedev destroys a TV camera attached to the net

Learner Tien, 19, became the youngest American man to reach the Australian Open's third round since Pete Sampras in 1990.
Russian tennis player Daniil Medvedev could be fined for an incident that occurred during the first round of the Australian ...
Learner Tien pulled off a massive upset against Daniil Medvedev at the Australian Open. So, who is Tien, the 19-year-old out ...