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.

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.

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.