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Muchova Clinches the Last WTA Finals Spot Without Playing as Kostyuk Retires in Ningbo

By Khabir Uddin Updated October 21, 2026
File photo from August 28, 2023: Marta Kostyuk hitting a forehand at the US Open in New York. It does not show Ningbo or the retirement. The 16:9 cropped derivative is offered under the same CC BY-SA 4.0 licence as the original.
Image: Marta Kostyuk (2023 US Open) 07.jpg by Hameltion · via Wikimedia Commons (CC BY-SA 4.0)
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  1. 01What exactly did Kostyuk need to do in Ningbo?
  2. 02What happened in the match itself?
  3. 03How did the race shrink to two players this week?
  4. 04Why does Muchova’s place feel earned rather than gifted?
  5. 05What does the completed field look like?
  6. 06What happens next for Kostyuk?

The last place at the WTA Finals was settled on Wednesday by a player who was not on court. Karolina Muchova clinched the eighth singles berth for Indian Wells when Marta Kostyuk retired from her second-round match at the Ningbo Open, ending the only challenge left to Muchova’s points total. Kostyuk lost the first set 6-4 to Ekaterina Alexandrova, took a medical timeout near the end of it, and stopped once the set was done.

What exactly did Kostyuk need to do in Ningbo?

Reach the final. The WTA had set the terms before the match: Kostyuk, the third seed playing her first match of the week after a bye, had to get to Sunday’s final to stop Muchova, who is not playing this week, from taking the last place. A second-round retirement closes that route in the most final way available. There is no later tournament in the calculation, because the race ended with the retirement. AP’s report of the clinch sets out the field Muchova now completes: Elena Rybakina, Aryna Sabalenka, Mirra Andreeva, Jessica Pegula, Coco Gauff, Elina Svitolina and Linda Noskova were already in.

What happened in the match itself?

Alexandrova broke in the first game and the set stayed on serve from there, Tennis World USA reports. At 5-4, with Alexandrova about to serve for the set, Kostyuk called the trainer. Field Level Media’s roundup describes an apparent wrist injury. Play resumed, Alexandrova served the set out 6-4, and Kostyuk retired rather than start the second set. Alexandrova moves on to a quarter-final against Leylah Fernandez, who beat Aliaksandra Sasnovich in three sets in a match that ran past three hours.

How did the race shrink to two players this week?

Through a withdrawal the day before. Iga Swiatek was still chasing the same berth until Tuesday, when she pulled out of Ningbo with a left thigh injury and announced her season was over, a decision this site covered in Swiatek ending her season and missing the Finals. Her exit turned the last place into a two-player question, and the arithmetic was never close to balanced. Muchova held the points and needed nothing. Kostyuk needed four wins in a tournament she entered carrying a wrist problem that had already cost her the China Open in Beijing earlier in the swing.

Why does Muchova’s place feel earned rather than gifted?

Because the season behind it is substantial. AP notes that reaching the Finals caps a year in which Muchova made the Wimbledon final and then won the Billie Jean King Cup for Czechia alongside Noskova, who is also in the Indian Wells field. On this desk’s own coverage, she spent the Wuhan week setting a stranger record, winning her first 10 tiebreaks of the season, a first this century, in a run built on surviving matches she was losing. A player who wins tiebreaks at that rate is not a passenger in an eight-player field. She is the kind of opponent the round-robin format rewards, because nobody in her group gets a quiet match.

What does the completed field look like?

Seven of the eight were settled before Ningbo’s second round, and the field mixes the season’s constants with its late risers. Rybakina and Sabalenka anchor it. Gauff arrives as a former champion whose autumn included calling out racist abuse at the China Open and still qualifying. Svitolina qualified in a week when her tennis shared the page with her announcement of her separation from Gael Monfils. Noskova, the Wimbledon champion in this telling, is Muchova’s Billie Jean King Cup partner. The Finals run November 8-15 at the Indian Wells Tennis Garden, a home-soil slot for an event usually staged far from the tour’s American base.

What happens next for Kostyuk?

That is the one fact Wednesday did not produce. Her season, a career-best year with major semi-finals at Roland Garros and Wimbledon and the Madrid title, ends its Finals chase with a retirement, and no report checked for this article gives the wrist a name or a timeline. She had managed it through the North American swing and missed Beijing with it, so Wednesday reads as a recurring problem rather than a new one. Whether she plays again this season is a question her team has not answered yet. The Finals place she was chasing is gone either way, and it went to the player who spent the week watching scores, which is its own kind of October tennis.

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Frequently asked questions

How did Muchova clinch the last WTA Finals spot?+

By arithmetic, completed in Ningbo. Kostyuk was the only player who could still overtake Muchova in the Race, and she needed to reach the Ningbo final to do it. Her retirement in the second round ended that route, so Muchova's points total could no longer be passed and the eighth place became hers.

What happened in Kostyuk's match in Ningbo?+

Kostyuk, the third seed, lost the first set 6-4 to Ekaterina Alexandrova, called a medical timeout near the end of the set for an apparent wrist injury, and retired once the set was over, Field Level Media and AP report. It was her first match of the tournament after a first-round bye.

Who else is in the WTA Finals field?+

Elena Rybakina, Aryna Sabalenka, Mirra Andreeva, Jessica Pegula, Coco Gauff, Elina Svitolina and Linda Noskova had already qualified, AP reports. Muchova completes the eight-player singles field for the November 8-15 event at Indian Wells.

Why was Swiatek not in the final race?+

Iga Swiatek was still in contention until Tuesday, when she withdrew from Ningbo with a left thigh injury and announced she was ending her season. That left the last place as a two-player question between Muchova and Kostyuk, settled a day later by Kostyuk's retirement.

What has Muchova's 2026 season included?+

A Wimbledon final against Linda Noskova and a Billie Jean King Cup title, won alongside Noskova for Czechia, AP reports. She also set a record on this site's coverage this month by winning her first 10 tiebreaks of the season, a first this century.

What does Kostyuk's retirement mean for her season?+

Her Finals route is closed, and the wrist becomes the open question. Kostyuk had a career-best season, reaching her first major semi-final at the French Open, another at Wimbledon, and winning the Madrid title. No report checked for this article gives a recovery timeline for the wrist.

Who does Alexandrova play next in Ningbo?+

Leylah Fernandez in the quarter-finals. Fernandez beat Aliaksandra Sasnovich in three sets over more than three hours on Wednesday, her 11th win in her last 14 matches, AP reports.

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