Roger Federer won his sixth Australian Open and 20th Grand Slam title with a five-set victory over Marin Cilic.
The Swiss lost five games in a row as he dropped the fourth set but recovered to win 6-2 6-7 (5-7) 6-3 3-6 6-1.
Federer, 36, becomes only the fourth player after Margaret Court, Serena Williams and Steffi Graf to win 20 or more major singles titles.
The final was played under the Rod Laver Arena roof as the tournament's extreme heat policy was invoked.
Despite starting at 19:30 local time in Melbourne, the conditions were if anything more testing than 24 hours earlier, when Caroline Wozniacki and Simona Halep played to the point of exhaustion in the women's final.