Coco Gauff and Taylor Fritz recorded wins over Iga Swiatek and Hubert Hurkacz respectively to seal victory for the United States over Poland in the United Cup Final on Sunday.
The pair picked up singles victories in the first two matches at Sydney's Ken Rosewall Arena in the city's Olympic Park Tennis Centre to earn a second title in the event.
Gauff, the 2023 US Open winner, backed up her success at last season's WTA Tour Finals with an impressive 6-4 6-4 straight sets win over current French Open holder Swiatek.
It extends her unbeaten record across all singles competitions back to October last year, and offers her a timely boost before the start of this month's Australian Open.
"I think I have the belief that I am one of the best players in the world, and when I play good tennis, it's hard for me to be beaten," she said afterwards.
"Today I think I played great tennis, and I'm happy to get a point for my team on the board. It was tough today. I'm not gonna lie."
Fritz meanwhile came through a final set tie-break to defeat Hurkacz in an 6-4 5-7 7-6 (7-4) encounter in the mixed team event that doubles at the ATP Tour kick-off event.
The world number four is looking to follow his first appearance in a Grand Slam final with success in Melbourne, after enjoying his best year on the courts to date in 2024.
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