MELBOURNE, Jan 25 (Reuters) - American Learner Tien overcame a ‌nosebleed in the opening set to school Daniil Medvedev 6-4 6-0 6-3 at the Australian Open on Sunday and moved ‌into the quarter-finals of a Grand Slam for the first time in his young career.

The 20-year-old's stunning dismantling of the ‌Russian was a far cry from their epic five-setter that lasted nearly five hours in the second round at Melbourne Park last year, with Tien wrapping up the contest in an hour and 42 minutes on Margaret Court Arena.