US Open Day 9: Zverev, Osaka and Swiatek face fresh challenges

Day nine of the US Open delivered a slate of fourth‑round matches that could reshape the tournament’s second week. In the men’s draw, Alexander Zverev, fresh from a straight‑sets win over Alejandro Tabilo, opened his night session against the 21st‑seeded Italian on Arthur Ashe Stadium. The women’s marquee clash saw Naomi Osaka take on world‑number two Elena Rybakina, while Francisco Cerundolo met rising Belgian Alexander Blockx. The final highlighted match featured six‑time Grand Slam champion Iga Swiatek against the resurgent Chinese player Zheng Qinwen.

Why the matches matter

Zverev, the reigning French Open champion, is looking to cement his place among the tournament’s favourites. A win would put him into the quarter‑finals and keep his title hopes alive, especially after two gruelling five‑setters earlier in the week. Osaka, returning to form after maternity leave, needs a victory to stay on course for a potential third US Open title; a loss would see her exit earlier than expected for a player of her calibre. Rybakina, already in contention for the world No 1 ranking, can secure a semi‑final berth and a chance to overtake Aryna Sabalenka with a win.

In the men’s undercard, Cerundolo’s recent upset of Taylor Fritz highlighted his rise as the highest‑ranked Latin American on tour. Blockx, seeded at a major for the first time, is looking to build on his shock win over Flavio Cobolli and prove his breakthrough was no fluke. Their encounter promises a contrast of styles, the South American’s baseline resilience against the Belgian’s aggressive play.

Swiatek versus Zheng: a test of resilience

Swiatek enters the match with a dominant head‑to‑head record, having won seven of eight meetings. Zheng, however, earned a memorable victory over the Pole at the Paris Olympics, a win that still resonates. After a lengthy recovery from elbow surgery, Zheng fought her way through qualifying and stunned Madison Keys from 0‑5 down in the final set of the third round. She will need that same fighting spirit to challenge Swiatek, who has captured her first title of the year in Toronto and is eager to add another Grand Slam to her résumé.

"I know she's one of the best players in the world, so I have no choice but to come with a high level," Osaka said. "I think that's when the most exciting tennis is."

What comes next

A win for Zverev would set up a potential showdown with either the top seed or a dark horse, depending on other results. Osaka’s progression could see her face a top‑seeded opponent in the quarter‑finals, a match that would likely draw global attention. Blockx’s victory would mark a rapid ascent for the 21‑year‑old, potentially propelling him into the top 50. Swiatek, if she advances, will look to add another major to her collection, while Zheng’s performance will be a barometer for her comeback’s longevity.