A vintage Novak Djokovic tamed Carlos Alcaraz in a late-night blockbuster to set up an Australian Open semi-final with Alexander Zverev as two-time women's defending champion Aryna Sabalenka fought on. The 37-year-old Djokovic rolled back the years at the scene of his greatest achievements on Rod Laver Arena in Melbourne with a 4-6, 6-4, 6-3, 6-4 triumph sealed close to 1:00 am. The Serb surged into the semi-finals and a date with world number two Zverev to edge closer to an 11th Melbourne crown and all-time record 25th Slam title.