Kazakhstan advanced to the United Cup semifinals with an unassailable 2-0 lead over a German team playing without the injured World No. He was scheduled to face Alexander Shevchenko but withdrew at the last minute with Kazakhstan leading the tie 1-0 after Elena Rybakina beat Laura Siegemund 6-3, 6-1. In Sydney, Iga Swiatek and Hubert Hurcacz won their deciding mixed …