Defending champ Jannik Sinner drops set for first time since October, but rallies for win; American Danielle Collins plays villain while advancing.

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 Daniil Medvedev in a five-set classic, 6-3, 7-6, 6-7, 1-6, 7-6, that ended at 2:54 a.m. local time. Medvedev had reached three of the past four Australian Open finals, but could not fend off a ferocious Tien.

Defending champion Jannik Sinner’s consecutive-sets streak ended in the second round of the Australian Open on Thursday night, but he advanced with a 4-6, 6-4, 6-1, 6-3 victory over wild-card entry Tristan Schoolkate.

Defending Australian Open champion Jannik Sinner cruised into the third round of the ongoing after early struggles against Tristan Schoolkate of Australia on Thursday (Jan 16). The Italian who was in the headlines for the wrong reasons in the build up to the tournament registered a 4-6,