Overview
- Poland beat host Australia 2-1 in Sydney, with Jan Zielinski and Katarzyna Kawa sealing the tie by defeating Storm Hunter and John-Patrick Smith 6-4, 6-0 in mixed doubles.
- Iga Swiatek overwhelmed Maya Joint 6-1, 6-1 before Alex de Minaur edged Hubert Hurkacz 6-4, 4-6, 6-4 to force the deciding doubles rubber.
- The semifinal against the defending champion United States will feature Swiatek vs Coco Gauff and Hurkacz vs Taylor Fritz, with mixed doubles to decide the tie if the singles are split.
- Poland has reached the United Cup semifinals for the fourth consecutive year.
- Tournament officials brought the Belgium–Switzerland semifinal forward by 30 minutes due to an extreme-heat forecast, and Australia captain Lleyton Hewitt said he rested de Minaur from doubles to manage workload before the Australian Open.