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Twenty-year-old Learner Tien reached the Australian Open quarterfinals by defeating Daniil Medvedev, becoming the youngest American man in a Grand Slam quarterfinal since Andy Roddick.
Twenty-year-old American Learner Tien reached the Australian Open quarterfinals on January 25, 2026, becoming the youngest man to do so since Nick Kyrgios in 2015 and the youngest American man in a Grand Slam quarterfinal since Andy Roddick in 2002.
He defeated Daniil Medvedev 6-4, 6-0, 6-3 in the fourth round, overcoming a nosebleed that paused play for seven minutes.
Tien, who previously beat Medvedev at the 2025 U.S. Open, will face defending finalist Alexander Zverev in the quarterfinals.
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Learner Tien, de veinte años, alcanzó los cuartos de final del Abierto de Australia al derrotar a Daniil Medvedev, convirtiéndose en el hombre estadounidense más joven en un cuarto de final de Grand Slam desde Andy Roddick.