Australian Open Day 5: Jannik Sinner, Iga Świątek, Taylor Fritz move on; Learner Tien knocks out Daniil Medvedev
The final match of the day saw American Learner Tien, playing in his first major outside of the U.S. Open, upset No. 5 seed ...
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Top-seeded Jannik Sinner fends off upset bid on Day 5 at Australian Open
7-5 and reach the third round. Second-seed Iga Swiatek waltzed into the third round, along with fellow Grand Slam champions ...