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.

Second-round action at the Australian Open has at last concluded, as LWOT recaps a grueling day of men’s tennis on Day 5 that ended at 3 a.m. Read on below

At the age of 19, Learner Tien defeated Daniil Medvedev in a five-set thriller that finished just before 3 a.m. in Melbourne.

Highlights of the sixth day of the Australian Open on Friday (all times GMT): 1355 DRAPER EDGES VUKIC British 15th seed Jack Draper had to dig deep to beat local favourite Aleksandar Vukic 6-4 2-6 5-7 7-6(5) 7-6(8) in the third round to set up a clash with Spanish third seed Carlos Alcaraz.

After losing the first set 7-6 (3), two-time Australian Open champ Naomi Osaka retired from her third-round match against Belinda Bencic due to injury.

Naomi Osaka is out of the Australian Open after the abdominal injury that forced her out of the ASB Classic final in Auckland, New Zealand recurred during her third-round match against Belinda Bencic.