became the youngest American man to reach the Australian Open’s third round since Pete Sampras in 1990, upsetting a racket-tossing Daniil Medvedev 6-3, 7-6 (4), 6-7 (8), 1-6, 7-6 (10-7).

Learner Tien is the youngest American man to reach the third round of the Australian Open since an 18-year-old Pete Sampras in 1990.

MELBOURNE, Australia (AP) — 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 ...

became the youngest American man to reach the Australian Open’s third round since Pete Sampras in 1990, upsetting a racket-tossing Daniil Medvedev 6-3, 7-6 (4), 6-7 (8), 1-6, 7-6 (10-7). The 4-hour, ...

became the youngest American man to reach the Australian Open's third round since Pete Sampras in 1990, upsetting a racket-tossing Daniil Medvedev 6-3, 7-6 (4), 6-7 (8), 1-6, 7-6 (10-7 ...

When they resumed, Medvedev broke and served for the victory at 6-5, but Tien wouldn’t cede a thing, broke back, and forced the concluding first-to-10 tiebreaker that he emerged to win shortly ...

became the youngest American man to reach the Australian Open’s third round since Pete Sampras in 1990, upsetting a racket-tossing Daniil Medvedev 6-3, 7-6 (4), 6-7 (8), 1-6, 7-6 (10-7 ...