PERTH – World No. 2 Alexander Zverev pulled out of the United Cup on Jan 1 with a bicep strain, in what is a concern for the German star barely a week away from the Australian Open. The 27-year-old won his opening two games of the season against Brazil’s Thiago Monteiro and China’s Zheng Zhizhen.

World 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. The 27-year-old Zverev won his opening two singles matches of the season against Brazil’s Thiago Monteiro and China’s Zheng Zhizhen at the United Cup.

Alexander Zverev, the world No. 2-ranked tennis player, has withdrawn from the United Cup due to a bicep strain. Scheduled to play in Perth's quarterfinals, he was replaced by Daniel Masur. Zverev's withdrawal comes just weeks before the Australian Open,

SYDNEY - Kazakhstan shattered Germany's title defence at the United Cup on Wednesday and secured their place in the semi-finals of the mixed team tennis tournament. Read more at straitstimes.com.

PERTH, Australia (AP) — The top-seeded pair of Coco Gauff and U.S. Open finalist Taylor Fritz of the United States are into the United Cup mixed teams tennis quarterfinals.

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 Alexander Zverev won't play in Germany's quarter-final clash with Kazakhstan at the United Cup due to a biceps injury.

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.