Australia and Serbia Advance in United Cup; US Faces Decisive Match Against Australia

Novak Djokovic leads Serbia to victory, while Canada, led by Leylah Fernandez, wins its opening match against Chile.

Australia advances to the United Cup quarterfinals after defeating the United States in Perth.
Serbia, led by Novak Djokovic, secures a 2-1 victory over China in the United Cup.
Canada, led by Leylah Fernandez, wins its opening United Cup match against Chile.
Great Britain's Katie Boulter stuns fifth-ranked Jessica Pegula, but the United States wins the tie.
The United States will qualify for the quarterfinals if they win their final match against Australia.