a 19-year-old qualifier from California, became the youngest American man to reach the Australian Open's third round since Pete Sampras in 1990, upsetting a racket-tossing DaniilMedvedev 6-3 ...
Qualifier and 19-year-old Learner Tien beat No. 5-ranked and three-time Australian Open finalist DaniilMedvedev in a five ... A native of Irvine, California, Tien was a successful juniors ...