Teen tennis star Mirra Andreeva is on a roll, upsetting world No. 1 Aryna Sabalenka in Sunday's final of the 2025 BNP Paribas Open at Indian Wells and launching five spots to No. 6 in the WTA rankings as a result.

Sabalenka entered Sunday's match having not dropped a single set all tournament, then started the final strong with a 6-2 first-set victory.

The three-time Grand Slam winner's advantage didn't last past the first break, however, as Sabalenka's 17-year-old opponent came back roaring back to finish off the match 6-4, 6-3.

"In the second set, I tried to play a little bit more aggressive," Andreeva said after the match. "I didn’t try to overhit her, because I don’t think anyone can overhit Aryna, because she’s super powerful player."

"I tried to really create something to make her uncomfortable, and point by point, game by game, I managed to do that."

WTA Tour-leading Andreeva still hunting first Slam title

With Sunday's win, Andreeva became the youngest Indian Wells champion since then-17-year-old Serena Williams defeated Steffi Graf to win the tournament in 1999.

Even more, Andreeva did so in dominant fashion, ousting top players like No. 22 Elina Svitolina, No. 8 Elena Rybakina, and even the contest's defending champion, No. 2 Iga Świątek, to advance to the championship match.

By defeating both Sabalenka and five-time major champion Świątek, Andreeva added her name next to Williams' in another line of the tennis history book, becoming the first player under 18-years-old to defeat the world Nos. 1 and 2 at the same WTA tournament since the US legend did so at the 1999 US Open.

Perhaps most impressively, Andreeva now sits atop all other players on tour with a 19-3 record on the season, after adding Sunday's Indian Wells trophy to last month's 2025 Dubai Championships title.

That said, Andreeva's current hot streak isn't just a warning to her opponents on tour — it's a signal that the teen could be on the precipice of lifting her first-ever Grand Slam trophy, as her chances of reaching the sport's apex skyrocket with every top-ranked victory.

With Sunday's final match looming, the competition is heating up at the 2025 BNP Paribas Open at Indian Wells — though several top US players are no longer feeling the fire after falling short in the Round of 16.

Unseeded 28-year-old Swiss contender Belinda Bencic claimed arguably the tournament's biggest upset thus far, with the wild card ousting world No. 3 Coco Gauff on Wednesday.

Despite Gauff taking the first set, 2020 Olympic champion Bencic prevailed, fighting through multiple medical timeouts to snag the win.

Fellow US standout No. 4 Jessica Pegula suffered a similar fate, losing to Ukraine’s No. 23 Elina Svitolina in a three-set match heavily impacted by three hours of rain delays on Tuesday.

With the 5-7, 6-1, 6-2 come-from-behind win, Svitolina advances to her first Indian Wells quarterfinals in six years.

World No. 1 Aryna Sabalenka and defending Indian Wells champion No. 2 Iga Świątek continued their dominance through the Round of 16, with each booking their quarterfinals berth without dropping a single set at the tournament.

Bencic to face last-standing US player Madison Keys

Another US star stands between Bencic and Friday's semifinals, as 2025 Australian Open champ and freshly minted world No. 5 Madison Keys continues her winning form in California.

The endurance and tenacity that earned Keys her first-ever Grand Slam title is on display at Indian Wells, where she outlasted Belgium's No. 28 Elise Mertens after three back-and-forth sets on Monday before surviving a difficult battle against Croatia's No. 19-seed Donna Vekić in Wednesday’s Round of 16.

By winning the 4-6, 7-6 (7), 6-3 clash, Keys is now riding a 15-match victory streak into Thursday's quarterfinal.

"I kind of just started deciding I was going to go for a little bit more," she said afterwards. "Really happy to be able to get that match and get that win and play another match here."

How to watch Thursday's 2025 Indian Wells quarterfinals

Thursday's quarterfinal round kicks off with Świątek taking on China's 2024 Olympic champion No. 8-seed Qinwen Zheng in a gold-medal rematch at 2 PM ET.

Svitolina will take on No. 9-seed Mirra Andreeva at 4 PM ET, with Keys set to contend with Bencic at 5:10 PM ET.

Sabalenka will close out the round at 8 PM ET, when she'll face her first seeded opponent all tournament in No. 24-seed Liudmila Samsonova.

Live coverage of all matches will air on the Tennis Channel.