American teen Learner Tien pulled off the biggest upset so far at the 2025 Australian Open, ousting Russian Daniil Medvedev - ...
By defeating world No. 5 Daniil Medvedev, Learner Tien of the United States has become the third teenager to dispatch a Top 10 opponent at the Australian Open ...
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Learner Tien, a 19-year-old qualifier from California, became the youngest American man to reach the Australian Open's third ...
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