Coco Gauff and Taylor Fritz have powered the U.S. into the semifinals of the United Cup mixed teams tennis event.

Coco Gauff defeated Iga Swiatek to give the USA a 1-0 lead and Taylor Fritz edged Hubert Hurkacz in a third-set tiebreak to deliver the United Cup title.

Leylah Fernandez of Canada serves during the women singles match against Coco Gauff of the United States in the Group

PERTH, Australia (AP) — The top-seeded pair of Coco Gauff and U.S. Open finalist Taylor Fritz of the United States are into the United Cup mixed teams tennis quarterfinals.

A dominant United States lifted its second United Cup mixed team tennis tournament title in three years, beating Poland 2-0 on Sunday.

Coco Gauff of the U.S., right, and teammate Taylor Fritz gesture during the award ceremony after the U.S. team defeated Poland in their final match at the United Cup tennis tourna

A dominant United States lifted their second United Cup mixed team tournament title in three years after they beat Poland 2-0 on Sunday with Coco Gauff and Taylor Fritz both winning their singles matches.

Coco Gauff and Taylor Fritz clinch victory for the United States over Poland in the United Cup final in Sydney.

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.Gauff's victory left the United States one win away from lifting the title for the second time,

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.