Australian Open: US qualifier Learner Tien stuns Daniil Medvedev in five-set thriller
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a story from The Guardian › International
- World No 121 beats No 5 seed 6-3, 7-6, 6-7, 1-6, 7-6
- Californian seals victory just before 3am in Melbourne
Learner Tien, a 19-year-old qualifier from California, became the youngest American man to re…