Trailing by one set to two, Novak Djokovic eventually won 6-4, 4-6, 2-6, 6-3, 6-4 against Dominic Thiem to take home record 8th Australian Open title.
Eleventh seeds Rajeev Ram and Joe Salisbury won the men's doubles final of this year's Australian Open with a straight-set victory of 6-4, 6-2.
Sofia Kenin rallied from one set down in the Australian Open final at the Rod Laver Arena on Saturday to win 4-6, 6-2, 6-2 and claim her first Major title.
The top-seed Australian, Alcott, got the better of his British opponent Andy Lapthorne 6-0, 6-4 in the finals to complete his historic win on Saturday.
Djokovic will face the Austrian world number 5 Dominic Thiem in the final. Thiem had beaten German world number eight Alexander Zverev.
Last two sets were played on equal footing but the resilience of Thiem proved to be the major factor which led him to his first-ever Australian Open final.
Roger Federer also believes he is still a force to be reckoned with and accepted that he was confident of adding more to his tally of 20 Grand Slams.
After a slight glitch in the opening moments which saw Roger Federer take a lead of 5-2 in the first set, Novak Djokovic played his best Tennis.
Rohan Bopanna and Nadiia Kichenok never looked as equal competitors against the world number five pair of Nektic and Krejcikova.
A former world number one and two-time Major champion, Garbine Muruguza won four consecutive games in the second set to enter the final.
