Sydney [Australia], December 31 (ANI): Alexander Zverev kicked off his 2024 season with a double victory at the United Cup in Sydney on Saturday, helping Germany upset Italy on the first day of play at Ken Rosewall Arena. Zverev paired with Angelique Kerber to win the deciding mixed doubles game 6-3, 6-0 over Lorenzo Sonego and Angelica Moratelli. “We’re both extremely happy, the whole team is extremely happy. Angie played great in mixed and her singles were a high level in her first match back,” Zverev was quoted as saying by ATP. “It was a special day for me, coming back after being out for …