Australian Open 2023 LIVE updates: Daniil Medvedev, Stefanos Tsitsipas, Jeļena Ostapenko in action on day five as third round begins

World No. 1 Iga Swiatek takes on the reigning Wimbledon champion, Stefanos Tsitsipas fights for the fourth round, and Daniil Medvedev faces off against Sebastian Korda as the world reacts to Thanasi Kokkinakis and Andy Murray’s epic 4am showdown.