Cincinnati semifinals feature Coco Gauff, Frances Tiafoe, Brandon Nakashima, and Jessica Pegula advancing in the tournament.

In a thrilling night at the Cincinnati Open, Frances Tiafoe and Brandon Nakashima emerged victorious in their quarterfinal matches, paving the way for an all-American men's semifinal. Alongside them, Coco Gauff and Jessica Pegula also secured their spots in the semifinals, marking a significant achievement for U.S. tennis. "It's insane, I think we're all doing so well," Gauff expressed. "Hopefully, you know, we can have a double title win. Obviously, there are more matches to be played for that to happen. We definitely root for each other."

Tiafoe triumphed over Italy's Lorenzo Musetti with a score of 7-6 (2), 7-5, while Nakashima defeated fellow American Taylor Fritz in a closely contested match, finishing 7-6, 4-6, 6-3. This marks a notable moment in the tournament's history, as it is the first time since 2010 that two American men have reached the semifinals in Cincinnati, a feat last accomplished by Andy Roddick and Mardy Fish. Additionally, Nakashima's achievement of reaching the semifinals in both Canada and Cincinnati in the same season is a first for an American man since Fish in 2011.

Coached by Tiafoe's former mentor, Wayne Ferreira, Nakashima has shown remarkable progress. Tiafoe commented on their connection, stating, "It's a guy who knows me pretty well in Wayne. I expect some good serving and all the best from him. Happy where I've been mentally more than anything. This has been a great week." Tiafoe previously reached the Cincinnati finals in 2024, where he faced Jannik Sinner.

In the women's draw, Gauff dominated her match against Ukraine's Marta Kostyuk, winning decisively with a score of 6-2, 6-2. She is set to face a surprising opponent in the semifinals: 20-year-old Czech player Sara Bejlek, who made headlines by defeating 2019 champion Madison Keys in a grueling match that ended 3-6, 6-4, 7-6 (5). Bejlek's earlier victory over top-ranked Aryna Sabalenka in the round of 16 further underscores her potential as a formidable competitor.

Gauff acknowledged the challenge ahead, saying, "Sara is a great player. I watched her a lot in Abu Dhabi [in February] this year when she won that title. So I think it's going to be a tough match. I'm looking forward to it." Meanwhile, Pegula, currently ranked No. 3, will take on fifth-ranked Iga Swiatek in the other women's semifinal, promising an exciting day of tennis ahead.