MELBOURNE, Australia — Madison Brengle knew that facing defending champion Naomi Osaka wasn’t going to be easy.

It wasn’t.

The 13th-seeded Osaka rolled through the first set before dispatching Brengle, 6-0, 6-4, in the second round of the Australian Open early this morning.

Osaka lost just four points in the opening four games and needed only 20 minutes to win the first set against Brengle, the Dover native who is currently ranked No. 54 in the world.

Asked after the match to rate her overall performance, Osaka said she’s trying not to be overly critical of her own play.

“Honestly I’m trying not to do that,’’ she said. “I’m a bit of a perfectionist. If I compare myself with the past, I’ll never be satisfied.

“The goal for me is just to have fun ... (and) I think we’re accomplishing that.’’

Brengle was able to hold her ground in the second set.

When she broke Osaka’s serve for the first time in the seventh game, Brengle owned a 4-3 lead in the set. But Osaka dominated the match after that, winning the final nine points to close out the match.

Osaka, who is going after her fifth career Grand Slam title, hit 37 winners and committed only 32 unforced errors in the match. Brengle had just 14 unforced errors but only four winners.

Osaka is coming off a year in which she withdrew from the French Open and skipped Wimbledon as she took a mental health break. She was eliminated early on at the US Open.

It was the fifth time since 2015 that Brengle advanced past the first round of the Australian Open. She was trying to reach the third round for the first time since 2016.