U.S. beats China to reach United Cup semis

SYDNEY, Jan. 1 (Xinhua) -- Stars Coco Gauff and Taylor Fritz put a halt to China's stirring United Cup campaign with victories in their singles matches on Wednesday as top seeds United States powered through to the semifinals.

The United States joined Kazakhstan in the final four, while the group stage was also completed on day six with Poland qualifying for the quarterfinals after defeating Czechia 2-1 while ho