Australian Open 2019: Naomi Osaka was 'robot' & Petra Kvitova is 'hurting'

Australian Open champion Naomi Osaka says she had to be a "robot" and turn off her feelings to hold her nerve and win the final against Petra Kvitova.

The Japanese, 21, had tears in her eyes after having three match points saved by her Czech opponent in the second set - before winning 7-6 (7-2) 5-7 6-4.

"You know how some people get worked up about things? That's a very human thing to do," said Osaka.

"Sometimes I feel like I don't want to waste my energy doing stuff like that."

US Open winner Osaka became the first player since American Jennifer Capriati in 2001 to follow her maiden Grand Slam title with victory at the next one.

Her triumph in Melbourne will also take her to the top of the world rankings on Monday.

"I felt like I didn't want to have any regrets," said Osaka, who was the fourth seed at the tournament. "If I didn't regroup after the second set, then I would have looked back on this match and probably cried.

"I just thought to myself that this is my second time playing a final, I can't really act entitled. To be playing against one of the best players in the world, to lose a set - to suddenly think that I'm so much better than her, that isn't a possibility.