United Cup: USA and Kazakhstan Reach Semis as Zverev Injury Ends Germany's Title Defense

Top-seeded USA advances with Gauff and Fritz wins, while Kazakhstan eliminates defending champion Germany after Zverev withdraws with a bicep injury.

Coco Gauff and Taylor Fritz secured the United States' semifinal spot with straight-set victories against China, complemented by a mixed doubles win by Krawczyk and Galloway.
Kazakhstan advanced to the semifinals after Elena Rybakina defeated Laura Siegemund and Alexander Shevchenko overcame Germany's Daniel Masur, following Alexander Zverev's withdrawal due to a bicep strain.
Great Britain reached the quarterfinals with Katie Boulter's dominant win over Australia's Olivia Gadecki, avoiding a mixed doubles showdown with her fiancé Alex de Minaur.
Poland moved into the last eight with Iga Swiatek's singles and mixed doubles victories, avenging her 2023 French Open final loss to Karolina Muchova.
The remaining tournament matches will now shift to Sydney, with semifinal clashes set to determine the finalists of this 18-nation mixed team event.