Overview
- In Perth, Coco Gauff beat Maria Sakkari 6-3, 6-2 and then, with Christian Harrison, edged Sakkari and Stefanos Tsitsipas 4-6, 6-4, 10-8 to seal the United States' 2-1 win over Greece.
- Stefanos Tsitsipas defeated Taylor Fritz 6-4, 7-5 for his first Top-10 victory since 2024, but Greece were eliminated following the mixed-doubles decider.
- Switzerland advanced 2-1 against Argentina, clinching with Belinda Bencic and Jakub Paul’s 6-3, 6-3 mixed-doubles victory after the singles were split.
- Belgium ousted Czechia 2-0 in Sydney as Zizou Bergs topped Jakub Mensik and Elise Mertens rallied past Barbora Krejcikova, setting up a semifinal against Switzerland.
- Poland secured a quarterfinal place with singles wins by Swiatek and Hurkacz over the Netherlands and will face host Australia to determine the U.S. opponent in the semifinals.