After early exits from the 2025 BNP Paribas Open at Indian Wells, US standouts continued to struggle this week, failing to advance past the Round of 16 at the Miami Open.

After ending the dream of a single Sunshine Double winner by outlasting Indian Wells champion No. 6 Mirra Andreeva in Sunday's three-set Round of 32 battle, US contender No. 17 Amanda Anisimova fell to the UK's unseeded Emma Raducanu in straight sets on Monday.

The Round of 16 action also saw world No. 1-ranked Aryna Sabalenka knock out US stalwart No. 14-seed Danielle Collins in two sets — a fate similarly suffered by No. 3-ranked Coco Gauff, who fell to Poland's unseeded Magda Linette by the exact same 6-4, 6-4 scoreline.

"It wasn’t great today," Gauff told reporters after the match. "It hasn’t been the last few weeks — I’m trying to figure that out. Definitely not happy about it."

The 21-year-old star is in the midst of a particularly frustrating 2025 run, having yet to advance past the quarterfinals of any competition since winning the 2024 WTA Finals.

"It's just a series of not having great results and feeling confident on the court," she said of her current struggles.

The lone US player still on Miami's court is world No. 4 Jessica Pegula, who easily ousted Ukraine's No. 23-seed Marta Kostyuk 6-2, 6-3 on Monday.

UK tennis star Emma Raducanu celebrates a win at the 2025 Miami Open.
Emma Raducanu has defeated three US stars so far at the 2025 Miami Open. (Robert Prange/Getty Images)

Unseeded players shine at 2025 Miami Open

Though five of the WTA's Top 9 players — from Sabalenka to her next opponent, China's No. 9 Qinwen Zheng — advanced to this week's Miami Open quarterfinals, a trio of unseeded athletes are also making deep runs in Florida.

The aforementioned Raducanu is displaying the same tenacity that helped her win the 2021 US Open at just 18 years old, dispatching a trio of US players in No. 8-seed Emma Navarro, unseeded McCartney Kessler, and Anisimova to claim a Wednesday quarterfinal date with US star Pegula.

Also causing chaos in Miami is unseeded 19-year-old Filipino pro Alexandra Eala, who rolled over 2025 Australian Open champion and world No. 5 Madison Keys on Sunday, ultimately earning a shot at No. 2 Iga Świątek on Wednesday.

But first, Gauff's unseeded conquerer Linette will kick off the tournament's quarterfinals by facing No. 6-seed Jasmine Paolini.

The Italian star already ushered Japan icon Naomi Osaka out of the competition in Monday's three-set Round of 16 battle, and will take aim at Linette's similarly impressive unseeded run on Tuesday.

Alexandra Eala of the Philippines celebrates her defeat of No. 5 Madison Keys at the 2025 Miami Open.
19-year-old Alexandra Eala is one of three unseeded Miami Open quarterfinalists. (Robert Prange/Getty Images)

How to watch the 2025 Miami Open quarterfinals

The 2025 Miami Open quarterfinals will kick off on Tuesday, when Magda Linette will face No. 6 Jasmine Paolini at 3:20 PM ET, before No. 1 Aryna Sabalenka takes on No. 9 Qinwen Zheng at 7 PM ET.

The remaining two quarterfinals will take Wednesday's court, with the timing for Emma Raducanu vs. No. 4 Jessica Pegula and Alexandra Eala vs. No. 2 Iga Świątek yet to be determined.

All 2025 Miami Open matches will be covered live on the Tennis Channel.

Iga Swiatek continued her stunning run Saturday, defeating Naomi Osaka 6-4, 6-0 to clinch the Miami Open title.

With the win, Swiatek becomes the fourth woman in history to claim the “Sunshine Double,” reserved for the players who win at Indian Wells and Miami in the same season. At 20 years old, Swiatek is the youngest player to achieve the feat, joining a group that includes Stefanie Graf, Kim Clijsters and Victoria Azarenka.

Swiatek has now won three consecutive titles, including her win at Doha in February. Serena Williams and Caroline Wozniacki are the only other players to win three or more straight WTA 1000 titles in a single season.

Defeating Osaka in one hour and 17 minutes, Swiatek won 73 percent of her first-service points while cutting down on unforced errors to maintain the lead. After a back-and-forth first set, the Polish star blanked Osaka in the second.

With the win, Swiatek extended her winning streak to 17 matches and is set to become the world No. 1 for the first time in her career on Monday.

Naomi Osaka mounted a comeback victory over No. 22 Belinda Bencic on Thursday, 4-6, 6-3, 6-4, to reach the Miami Open final. It’s her first championship final since the former world No. 1 won the Australian Open in 2021.

It’s also Osaka’s fourth career WTA 1000 final and her first in over a year.

“In the second set I just told myself, ‘Listen, if she beats you, someone is going to have to carry you off the court in a stretcher, because you’re going to fight for everything,'” Osaka said. “I think I just got opportunities and I was able to see them as opportunities. So I was able to push myself through it.

“I’m honestly glad that this was such a tough match, because I feel like you need that learning experience, and I learned a lot from today.”

On Twitter, she said that she’s “just so grateful right now.”

“Cheers to the ups and downs of life for making me appreciate this moment even more,” she wrote.

Osaka fired off 18 aces in the win, the most of any player on Tour so far this season.

After dropping the first set, Osaka began to find her groove, firing off 16 winners compared to just seven unforced errors in the second set. In the third, she forced a break to go up 3-2 and didn’t look back, taking the set 6-4.

With a current world ranking of No. 77, Osaka becomes the lowest-ranked Miami Open finalist, breaking a record previously held by Kim Clijsters, who won the title in 2005 while ranked at No. 38 in the world.

Osaka, who is projected to rise up to No. 36 in next week’s rankings, could return to the Top 30 with the title. She’ll go up against projected world No. 1 Iga Swiatek, who has won 16 straight matches.

Swiatek took care of No. 16 Jessica Pegula on Thursday in a straight-set win, 6-2, 7-5.

Iga Swiatek is on a tear, notching her 15th straight win to advance to the Miami Open semifinals.

The world No. 2 defeated No. 28 seed Petra Kvitova, 6-3, 6-3, in the Miami Open quarterfinals Wednesday to reach her fifth semifinal of the season.

Coming off back-to-back titles in Doha and Indian Wells, Swiatek has dominated the competition in Miami, dropping just 15 games in four matches.

The Polish star will next face off against No. 16 seed Jessica Pegula in the semifinals on Thursday, with the American moving on after Paula Badosa retired from their quarterfinal.

Swiatek will look for her first win over Pegula, who holds a 1-0 record over the soon-to-be world No. 1, beating Swiatek in 2019.

Should the 20-year-old win on Thursday, she will become only the ninth player in history to reach the Indian Wells and Miami Open finals in the same season.

Naomi Osaka and Belinda Bencic will headline the other semifinal in Miami, with Bencic holding a 3-1 head-to-head record against Osaka.

The 24-year-old star, however, is in top form in Miami, with Osaka yet to drop a set. Bencic will present a unique challenge to Osaka, with the world No. 22 able to absorb power and counter the 2021 Australian Open winner.

Semifinal coverage from the Miami Open will begin on Thursday at 1 p.m. ET on the Tennis Channel.

Naomi Osaka is into her first Miami Open semifinal after defeating Danielle Collins 6-2, 6-1 in the quarterfinals.

She is just the second Japanese woman to reach the semifinals at Miami after Kimiko Date Krumm in 1993 and 1995.

It’s Osaka’s 18th career semifinal.

In 60 minutes, Osaka rolled through her service games and handled Collins, continuing her theme of not dropping a set in the Miami Open. She fired 13 aces and did not face break point once in the match. It was the most aces Osaka has fired off in the last two seasons save for her match against Leylah Fernandez in the US Open, when she fired off 15.

On top of her ace count, Osaka hit 25 winners to a mere three unforced errors, overpowering Collins’ 18 winners and 16 unforced errors.

“After Australia, I was training really hard every day,” Osaka told reporters after the match. “I went to Indian Wells with the intention to do really well, and then I didn’t. But Wim told me, Listen, you’re playing really well. But it’s hard to listen to someone tell you you’re playing well without having the results to back it up.

“I’m glad that, in a way, I don’t have a good ranking, because I’m able to play the matches that I need to play. I feel like I’m the type of person that plays better with more matches, so actually having back-to-back matches benefits me a lot.”

Osaka will next face defending Olympic champion Belinda Bencic, who she has yet to beat in a Tour-level match. Similar to Osaka, the No. 22 seed has not lost a set yet in the tournament, taking down Daria Saville 6-1, 6-2 in the quarterfinals.

Their last meeting came at the 2019 US Open, which Bencic won 7-5, 6-4.

Naomi Osaka is back into the quarterfinals at the Miami Open following a 6-3, 6-4 win over Alison Riske in the Round of 16. It’s her second straight quarterfinal run at the tournament. Last year, Osaka lost to Maria Sakkari in the quarterfinals, which snapped her 23-match winning streak.

Against Riske, Osaka hit a total of 40 winners in the match en route to the win.

“It’s really funny for me, because last year here I made it to the quarters, too,” Osaka said. “It was after I won Australia and I wasn’t that grateful. I kind of expected to win.”

This year, however, has been different. After a year of trials that resulted in Osaka stepping away from the game, citing mental health, she’s taking a new approach to the game – something that she has frequently vocalized.

“This is really one of the funnest times of my life,” Osaka said. “I’m really grateful.”

She’ll next face Danielle Collins, who took down No. 8 Ons Jabeur 6-2, 6-4, likely securing a top 10 spot in the world rankings. No. 2 Iga Swiatek took an easy 6-3, 6-1 win over Coco Gauff, saying she was in a “good zone.”

“I was really focused,” Swiatek said of the match. “Sometimes I have these kind of moments where I don’t even know what the score is. That’s nice, because you’re just focusing on tennis and tactics and technique.”

With three match wins under her belt, Swiatek has now won 14 matches in a row, which leads the Tour this season. She is also on track to become just the fourth player in WTA history to win at both Indian Wells and Miami back-to-back. Stefanie Graf, Kim Clijsters and Victoria Azarenka are the three who currently hold the designation.

Also in Miami, Azarenka abruptly left the court on Sunday during her match with Czech player Linda Fruhvirtova despite leading 6-2, 3-0. In a later statement, Azarenka cited stress as her reasoning for leaving the tournament.

“I shouldn’t have gone on the court today,” she said. “The last few weeks have been extremely stressful in my personal life. Last match took so much out of me, but I wanted to play in front of a great audience as they helped me pull through my first match.

“I wanted to go out there and try but it was a mistake.”

A Belarus native, sanctions imposed on both Belarus and Russia following the Russian invasion of Ukraine have prevented the two-time Grand Slam champion from playing on Tour with the name or flag of her country. At Indian Wells, she broke down in tears during her loss to Elena Rybakina.

Also in the statement, Azarenka revealed that she intends to take a break “and be able to come back.”

“I always look forward to the challenge and pressure of competition but today it was too much,” she continued. “I have to and will learn from this.”

Naomi Osaka continues to roll at the Miami Open, easily taking down No. 13 seed Angelique Kerber in a 6-2, 6-3 victory.

The one-hour victory is a big one for Osaka, who was 1-4 in career head-to-head matches against Kerber and had lost the past four against the former world No. 1. Kerber is one of two women to defeat the four-time Grand Slam champion four times, alongside Simona Halep.

“She’s like the first high-seeded player I’ve beaten this year,” Osaka said in her on-court interview. “I feel like I came into the match wanting to dictate. My power on the shots was working really well.”

Next up, Osaka will face off against Karolina Muchova, who upset No. 18 Leylah Fernandez 6-4, 7-6 (7-3). The previous two matches between Muchova and Osaka are split down the middle, with Osaka calling her “one of the most athletic players on tour.”

“It’s going to be a really fun match I think,” she added. “I know we both really want to win it.”

Elsewhere, the Miami Open was ripe with upsets as Aryna Sabalenka, Emma Raducanu, Anett Kontaveit, Elina Svitolina and Karolina Pliskova all lost their Round of 64 matches.

The No. 1 seed in the tournament, Sabalenka was stunned by Romanian Irina-Camelia Begu, losing 4-6, 4-6. The match gave Begu her first Top 10 win since 2018.

Sabalenka struggled, making 34 unforced errors to her opponent’s seven, and couldn’t find range from the baseline. She also was unable to break Begu’s serve, going 0 for 6 on break points during the match.

Raducanu bowed out in three sets (6-3, 4-6, 5-7), taking the first over Katerina Siniaková before dropping the final two sets.

Kontaveit lost to American Ann Li, 0-6, 6-3, 4-6, while Svitolina also took her match against Heather Watson to three sets and a breakpoint, 6-4, 3-6, 6-7 (9-7). Pliskova managed 10 aces against Anna Kalinskaya but was plagued by nine double faults, losing 3-6, 3-6.

After Thursday, just three seeds in the top half of the draw remain: No. 8 Ons Jabeur, No. 9 Danielle Collins and No. 22 Belinda Bencic