Coco Gauff overcame second-ranked Iga Swiatek 6-4, 6-4 in the opening singles of the United Cup mixed teams tennis event and the United States went on to win the final by beating Poland 2-0 on Sunday.

Coco Gauff and Iga Swiatek will battle for United Cup glory after the USA and Poland won their respective semi-finals on Saturday in Sydney amid bizarre circumstances.

Coco Gauff says she is feeling great and plans to play "confident tennis" in a United Cup showdown versus Iga Swiatek. On Saturday, the top-ranked American female tennis player impressively handled the business against Karolina Muchova, dismantling the Czech 6-1 6-4 to help the United States reach the final in Sydney.

Iga Swiatek secured a major victory over Elena Rybakina, 7-6(5), 6-4, to send Poland into another United Cup final. The Polish star excelled in key moments, avenging her losses to the 2022 Wimbledon champion,

Coco Gauff roared past Iga Swiatek to inspire team USA Sunday before Taylor Fritz sealed the United Cup title with victory over Poland's Hubert Hurkacz in Sydney.

Katie Boulter fell short of a stunning win over five-time Grand Slam champion Iga Swiatek as Britain's hopes of reaching the United Cup semi-finals are ended by Poland.

Coco Gauff ousted Karolina Muchova 6-1 6-4 at the United Cup, while Iga Swiatek overcame Elena Rybakina 7-6 (5) 6-4. In the opening rubber of the United States and Czech Republic semifinal, the 2023 US Open champion delivered a clinical performance firing eight aces and converting four of her eight break point chances.

The British number one had a break point at 4-4 in the deciding set against Poland’s five-time grand slam winner.

Coco Gauff and Taylor Fritz led the top-seeded United States to a sweep of second-seeded Poland, winning the United Cup championship in Sydney on Sunday.