Kazakhstan has advanced to the United Cup mixed teams tennis tournament semifinals with an unassailable 2-0 lead over a German team playing without the injured world No. 2-ranked Alexander Zverev.

World No.2 Iga Swiatek notched a hard-fought 6-3, 6-4 victory over the Czech Republic's Karolina Muchova at the United Cup in Sydney on New Year’s Day and Poland secured a 2-1 victory to finish atop Group B.

There are still three spots up for grabs for the quarterfinals of the United Cup and five teams are in contention. This article features the blockbuster tie between Poland and Czechia, the winner will top the group.

Kazakhstan has advanced to the United Cup mixed teams tennis tournament semifinals with an unassailable 2-0 lead over a German team playing without the injured world No. 2-ranked Alexander Zverev.

No. 2-ranked Alexander Zverev withdrew from the United Cup mixed teams tennis tournament on Wednesday with a biceps strain less than two weeks from the start of the Australian Open

Iga Swiatek has made a lightning start to her 2025 season after annihilating Norway's Malene Helgo at the United Cup 6-1 6-0 in just over an hour of play. Going into the match, the five-time Grand Slam champion was considered the massive favorite to beat the 404th-ranked Norwegian tennis player.

World No. 2-ranked Alexander Zverev, 27, who won his opening two singles matches of the season, withdrew from the United Cup mixed teams tennis tournament on Wednesday with a biceps strain less than two weeks from the start of the Australian Open.

Germany's world number two Alexander Zverev pulled out of the United Cup on Wednesday with a bicep strain barely a week away from the Australian Open.

World No.2 Alexander Zverev won't play in Germany's quarter-final clash with Kazakhstan at the United Cup due to a biceps injury.