Germany’s Alexander Zverev claimed his fifth title of a golden tennis year on Sunday with a convincing 7-5, 6-4 victory over American qualifier Frances Tiafoe at the ATP tournament in Vienna. The 24-year-old Zverev needed 1 hour 36 minutes to add his latest honour in a 2021 spell highlighted by Olympic gold in Tokyo. But with 25 losses and just two defeats since Wimbledon, the Hamburg player is arguably in the form of his life and with 18 Tour wins, only the great Boris Becker has more among German players. “He didn’t let me play the way I wanted to play, tactically he was very good,” Zverev s…