Australian Open: 'What Novak would do' - Daniil Medvedev's secret weapon in epic thriller

World No 2 and top seed at the Australian Open Daniil Medvedev has pulled off one of the all-time comebacks to claim a 6-7 3-6 7-6 7-5 6-4 thriller over Canadian Felix Auger-Aliassime and book a place in the Australian Open semifinals.Without...