American qualifier Learner Tien shocked the tennis world on Thursday when he upset last year's Australian Open runner-up Daniil Medvedev in a nearly five-hour, five-set match in the second round.

Already off-side with the crowd for a meltdown against a camera, Daniil Medvedev once again drew the ire of the fans and the chair umpire.

Learner Tien has become the youngest American man to reach the Australian Open’s third round since Pete Sampras in 1990.

Italian superstar Jannik Sinner drew raucous laughs from the Rod Laver Arena crowd with a cheeky sledge of tennis great John ...

The American, ranked 121 in the world, overcame the former world number one 6-3, 7-6 (7/4), 6-7 (8/10), 1-6, 7-6 (10/7) after four hours and 48 minutes of intense action at Margaret Court Arena.