Naomi Osaka won the BNP Paribas Open in Indian Wells on Sunday, beating fellow 20-year-old Daria Kasatkina to claim her first WTA title.

Osaka needed 70 minutes to defeat her Russian opponent, prevailing 6-3, 6-2 to become the 11th Japanese to win a top-level tournament on the tour, the first since Misaki Doi in 2015.

Osaka, who upset two-time Indian Wells champion Maria Sharapova in the opening round and powered past world No. 1 Simona Halep in the semis, is the first Japanese to capture a Premier Mandatory event, the second-highest category behind the Grand Slam.

Sunday's victory pushed Osaka up to a career-high No. 22 in the latest world rankings, a jump of 22 places. She will face former No. 1 Serena Williams, who only recently returned to action after having a child, in the first round of the Miami Open starting Tuesday.

Osaka was as giddy as a child following her triumph.

"This is probably going to be the worst acceptance speech of all time," said Osaka, who has a Japanese mother and a Haitian father. "I'd like to thank Daria for being super nice and also being a really cool person to play against. We're going to play a lot of finals together later."

"I was extremely stressed and extremely nervous, but my plan was to fake that I'm very calm. I just knew that she was going to fight for every point, too, so I couldn't afford to lose points based on nerves, and I had to keep making the right decisions."

"I really wanted to win this, but also I just tried to think it was a first-round match and just not psych myself out too much. I don't really know what's going on right now. I really feel like I have another match I have to play tomorrow, and it didn't really sink in that I won. I'm happy."

Kasatkina tipped her hat to Osaka, who is the sixth different champion in Indian Wells in the last six years. Osaka is also the tournament's youngest champion since Ana Ivanovic in 2008.

"Basically she was much better today than me, so she really deserved to win," Kasatkina said. "I think we were both nervous at the beginning, because (this was our) biggest finals so far. During the match, she was able to manage her nerves and stuff, and I was still a little bit tight."

"She's very powerful. She's playing, serving good, and doesn't have weaknesses. She's hitting her forehand, backhand, so she's really tough."