Katie Boulter and Charles Broom are set to take on Australias Matthew Ebden and Ellen Perez in the mixed doubles; Watch the United Cup, plus ATP and WTA events Brisbane, Auckland and Hong Kong live on ...

It’s all on the line in Sydney as Poland and Czech Republic face a must-win showdown, while Perth hosts the last two champions, the U.S. and Germany, in their quests for semifinal berths.