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.

Alexander Zverev, the world No. 2-ranked tennis player, has withdrawn from the United Cup due to a bicep strain.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,

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.

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.

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.

Team Germany made an impressive start to its United Cup title defense, easily qualifying for the quarterfinals. Kazakhstan starts as an underdog against last year’s champions, but 2022 Wimbledon Champion Elena Rybakina will try to rally them to success in Perth.