Roger Federer said "age is not an issue" after he beat Marin Cilic to win his sixth Australian Open and 20th Grand Slam title at the age of 36.
The Swiss second seed won 6-2 6-7 (5-7) 6-3 3-6 6-1 to retain the title he won 12 months ago.
Ken Rosewall, who won the 1972 Australian Open at 37, is the only man older than Federer to have won a major singles title in the Open era.
"I've won three slams now in 12 months. I can't believe it myself," he said.
"I've just got to keep a good schedule, stay hungry, then maybe good things can happen.