Learner Tien has become the youngest American man to reach the Australian Open’s third round since Pete Sampras in 1990.

Teenage qualifier Learner Tien said it was "pretty crazy" after becoming the youngest man to reach the Australian Open fourth round since Rafael Nadal in 2005 when he overcame Frenchman Corentin Moutet on Saturday.

Nineteen-year-old American Learner Tien defeated Daniil Medvedev to reach the Australian Open's third round. Despite Medvedev's comeback, Tien's tactical prowess led to a dramatic victory, marking him as the youngest American to achieve this feat since Pete Sampras in 1990.

MELBOURNE, Australia (AP) — Learner Tien beats Daniil Medvedev, is youngest American man in Australian Open’s 3rd round since Pete Sampras in 1990.

Alex Michelsen and Learner Tien have known each other since they were nine years old. This year in Melbourne, the Southern California kids can celebrate their friendship and at th

Jannik Sinner and young tyro Learner Tien will look to reach the second week of the Australian Open on Saturday while the women's third round is headlined by Iga Swiatek taking on Emma Raducanu.

Defending champion Jannik Sinner recovered his composure after an early setback to storm into the third round of the Australian Open on Thursday but Brazilian teenager Joao Fonseca's first Grand Slam campaign came to an end in the second round.

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 racket-tossing Daniil Medvedev 6-3, 7-6 (4), 6-7 (8), 1-6, 7-6 (10-7) in a match that began Thursday night and ended in the wee hours of Friday.

Learner Tien beats Daniil Medvedev, is youngest American man in Australian Open’s 3rd round since Pete Sampras in 1990.

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 — 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 ...

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 ...