USA to face Poland for United Cup title, Sabalenka and Osaka advance to finals

• US beat Czechs, Poland defeat Kazakhstan in Sydney
• Aryna Sabalenka powers past Andreeva in Brisbane
• Naomi Osaka close to ending trophy wait in Auckland

Former champions the United States returned to the final of the United Cup mixed team tournament with a fortuitous victory over the Czech Republic on Saturday and set up a title clash with Poland, who hammered Kazakhstan.

Tomas Machac looked set to draw the Czechs level at 1-1 in their semi-final and was serving for the contest against Taylor Fritz, but an apparent cramp took its toll and he lost three straight games before throwing in the towel at 7-6 (4), 5-6.