Learner Tien beats Daniil Medvedev and is the youngest U.S. man in Australia’s 3rd round since Pete Sampras
PAUL CROCK/AFP via Getty Images MELBOURNE, Australia — Learner Tien, 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 Daniil ...