Learner Tien, a 19-year-old qualifier from California, became the youngest American man to reach the Australian Open's third ...
Andre Agassi once drew a comparison between how Pete Sampras and Roger Federer's abilities had evolved over the years.
Learner Tien celebrated his shock Australian Open victory over three-times runner-up Daniil Medvedev in true teenage fashion, ...
Of the three upsets, Tien's win over Medvedev was the biggest given the latter's accomplishments — a three-time Australian ...