Overview

• World No. 1 Jannik Sinner retired unwell in the Cincinnati final and later apologized on Instagram, with the exact medical cause still unconfirmed as he rests in New York.
• Sinner officially pulled out of the US Open mixed doubles after initially being slated to partner Katerina Siniakova following Emma Navarro’s withdrawal for Monterrey.
• The US Open’s renewed mixed doubles began Aug. 19–20 with 16 pairs, short four-game sets, no‑ad scoring, 4–4 tiebreaks and a 10‑point match tiebreak, with the final played to six-game sets.
• Italian teams started strongly as Sara Errani and Andrea Vavassori beat Elena Rybakina and Taylor Fritz, and Lorenzo Musetti with Caty McNally defeated Naomi Osaka and Gaël Monfils.
• Post-Cincinnati calculations put Alcaraz virtually 60 points ahead entering the US Open, meaning Sinner must earn at least 60 more points than his rival to retain No. 1.