The mixed doubles duo of Katarzyna Kawa and Jan Zieliński earned the decisive point for Team Poland, overpowering Australia's Storm Hunter and John-Patrick Smith in straight sets, 6-4, 6-0, Polish state news agency PAP reported.
Photo: EPA/DAN HIMBRECHTS
Earlier, Poland's world No. 2 Iga Świątek beat Australia's Maya Joint 6-1, 6-1 in the women's singles, and Hubert Hurkacz lost 4-6, 6-4, 4-6 to Alex de Minaur in the men's singles.
Poland will face Team USA, the United Cup title holders, on Saturday for a place in the championship match.
Poland are two-time United Cup finalists, losing the title match to Germany in 2024 and to the United States in 2025.
Team Poland stand for the national anthem at the 2026 United Cup mixed-teams tennis tournament in Sydney, Australia. Photo: EPA/MARK EVANS
The United Cup serves as a warm-up event to the Australian Open, which begins on January 18 in Melbourne.
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Source: IAR, PAP