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.

After being ousted from the tournament by a teenage qualifier in the early hours of the morning, the no.5 seed and 2024 runner-up skipped his post-match media commitments.

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 is the first time two teenagers or more have beaten top-10 players at a major since 2006,

Tien reached two junior Grand Slam singles finals in 2023, at the Australian Open and U.S. Open, and played one semester of college tennis at Southern California before turning pro that year

Learner Tien, a 19-year-old American qualifier, has outlasted marathon man Daniil Medvedev in an astonishing Australian Open boilover, sending the three-time finalist spinning

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.

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 announced himself on the grand slam stage by delivering a gritty performance to down Daniil Medvedev at the Australian Open.

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

U.S. 19-year old Learner Tien defeated No. 5 Daniil Medvedev in a fifth set tiebreaker in the Australian Open, making history in Melboune.

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