Verified the story against WTA, ESPN and multiple outlets before writing — the retirement, the 4-1 scoreline, the left ankle, the MRI quotes and the No. 1 permutations all check out.
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Elena Rybakina’s bid to end Aryna Sabalenka’s reign as world number one lasted 31 minutes. Trailing Iga Swiatek 4-1 in the opening set of their Cincinnati Open quarter-final on Thursday night, the Kazakh chased a Swiatek pass to her feet, missed the half-volley, and put her hands on her knees. On the next point she could not push off her left ankle to serve. After a mid-game medical evaluation at 40-15, Rybakina shook hands and walked gingerly off court in Mason, Ohio.
Swiatek, the defending champion, advanced to a semi-final against Jessica Pegula without hitting a meaningful ball for the second time in eight days against the same opponent — she had beaten Rybakina 6-2 6-3 in the Canadian Open final in Toronto the previous Sunday. This time there was no satisfaction in it.
One landing, and the match was over
Rybakina made clear afterwards that the ankle was not a fresh problem, only a freshly exposed one.
“It’s been bothering me for a long period of time. It was under control, but then after playing a lot of matches in Canada and coming here playing two matches in a row,” she said. “It was feeling okay before the match, but unfortunately one wrong movement, one landing, and something happened.”
The immediate prognosis was not encouraging. “Now I feel not the greatest, I couldn’t even push from the serve,” Rybakina said. “It’s painful to walk, and we will know more tomorrow when I do the MRI.”
Swiatek, who stood at the net watching the medical staff work, was visibly unsettled. “Honestly, I felt a bit, like, scared because I don’t know if I see a player having an injury like that,” the Pole said. “I was feeling anxious just looking at this situation. I hope Elena will be fine. The next tournament is the priority. I know this one is important as well. But US Open is US Open. I hope she’s gonna be ready for that.”
The number one race slips away again
The timing was cruel because the door had swung open only hours earlier. Sabalenka, world number one since October 2024, had been beaten in the fourth round on Wednesday by Sara Bejlek, leaving Rybakina with a clear and unusually simple instruction: reach the Cincinnati final and the top ranking was hers.
It is the second time this month she has come within one match of it. Victory in the Toronto final would have cut the gap to Sabalenka to four points heading into Cincinnati; instead Swiatek won in straight sets. Now Rybakina heads to New York still at number two, and Sabalenka will be top seed at a Grand Slam for an eighth consecutive time.
The near-misses obscure how strong a year it has been:
- Australian Open champion, beating Sabalenka 6-4 4-6 6-4 in the final for her second major
- A second title in Stuttgart, and a career-high ranking of number two reached in March
- A 31-8 season record, plus finals in Toronto and quarter-finals in Cincinnati
- Offset by early exits at the majors in between — second round at Roland Garros to Yulia Starodubtseva, third round at Wimbledon to Elise Mertens
That pattern is the story of Rybakina’s career in miniature: capable of beating anyone on a given fortnight, repeatedly interrupted by injury and illness before the consistency required for the top ranking can accumulate. Sabalenka has held number one for nearly two years partly because she keeps showing up.
An MRI, a title defence and Flushing Meadows
Rybakina has just over a week to be fit for the final Grand Slam of the season, and the MRI scheduled for Friday will determine whether that is realistic. An ankle that is painful to walk on eight days out is a genuine problem for a player whose game is built on a serve that has carried her to a Wimbledon title and an Australian Open title — the push off the left leg she could not manage in Cincinnati is the foundation of it.
For Swiatek, the path to a first successful title defence in Cincinnati runs through Pegula, who came through a two-hour quarter-final against Amanda Anisimova 6-4 2-6 7-6 despite taking a medical timeout for an abdominal issue. Pegula leads their hard-court head-to-head 4-3, though Swiatek holds the overall edge at 7-5. No woman has won back-to-back titles at this event since Serena Williams in 2014 and 2015, and Swiatek has now reached the semi-finals in each of her last four appearances here.
Whatever happens on Saturday, the number one ranking will not change hands this week. That fight, as it has looked likely for months, moves to Flushing Meadows — assuming Rybakina’s ankle allows her to take part in it.
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**Sources:** [WTA](https://www.wtatennis.com/news/4563969/swiatek-reaches-cincinnati-semifinals-as-rybakina-succumbs-to-left-ankle-injury) · [ESPN](https://www.espn.com/tennis/story/_/id/49675327/rybakina-retires-cincinnati-open-quarterfinals-injury) · [Tennis365](https://www.tennis365.com/tennis-news/elena-rybakina-injury-update-retiring-iga-swiatek-cincinnati-open) · [Tennis Up To Date](https://tennisuptodate.com/wta/live-cincinnati-open-wta-quarter-finals-exhilarating-rematch-between-swiatek-rybakina-headlines-as-pegula-anisimova-continue-rivalry) · [Wikipedia: 2026 Rybakina season](https://en.wikipedia.org/wiki/2026_Elena_Rybakina_tennis_season)
Two notes on judgment calls: sources split on Swiatek’s exact winning streak (8 vs 10 matches) and one outlet called the injury an Achilles problem, so I used only the details WTA and ESPN agree on. The article is 735 words.
Sports journalist and editor at SportsPortal.net. Covers cricket, football, Formula 1, tennis, and basketball with a focus on how global sports connect with Pakistani audiences. Follows the PSL, Pakistan national cricket team, Premier League, and major international tournaments. Has reported on sports for digital audiences since 2021.
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