Australian Open Day 5: Jannik Sinner, Iga Świątek, Taylor Fritz move on; Learner Tien knocks out Daniil Medvedev
Day 5 of the Australian Open was a good day for the higher seeds in the men's and women's draws, with big names advancing to the third round. Men's No. 1 seed Jannik Sinner stumbled early against Australian Tristan Schoolkate by dropping the opening set 4-6.