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 ...

The outcome was eyebrow-raising because of the wide gulf in experience and accomplishments between the two players at Margaret Court Arena.

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 Medvedev 6-3,

At the age of 19, Learner Tien defeated Daniil Medvedev in a five-set thriller that finished just before 3 a.m. in Melbourne.

American teenager Learner Tien produced arguably the biggest shock of the Australian Open so far as he defeated last year’s runner-up Daniil Medvedev in five sets, 6-3, 7-6 (4), 6-7 (8), 1-6, 7-6 (7).

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 Medvedev 6-3,

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 Medvedev 6-3 ...

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 ...

A series of jaw-dropping upsets of top 10 players at the Australian Open by fearless teenagers has fuelled excitement at the future of men's tennis as the old guard fades into history.

It wasn’t often pretty, but two-time defending Australian Open champion Aryna Sabalenka extended a few impressive streaks on Friday while becoming one of the first players to advance to the fourth round of the year’s opening Grand Slam tournament.

American qualifier Learner Tien shocked the tennis world on Thursday when he upset last year's Australian Open runner-up Daniil Medvedev in a nearly five-hour, five-set match in the second round.

US qualifier Learner Tien stunned No.5 seed Daniil Medvedev beating him in five sets while Danielle Collins made an enemy of the crowd and the Special Ks, who retired hurt.