MELBOURNE  - Alexander Zverev believes finding the joy in playing on the biggest stages will be key to his hopes of a Grand Slam breakthrough at the Australian Open after struggling with the pressure of being branded the next big thing of men’s tennis. The 21-year-old has proved repeatedly he has the weapons to upset titans like Roger Federer and Novak Djokovic but has only a solitary quarter-final appearance at the Grand Slams to his credit, at last year’s French Open. But he admits he will need a change of mindset when he marches out onto the blue hardcourts at Melbourne Park and play with the same freedom that saw him claim his maiden ATP Tour Finals crown at the end of the 2018 season. “I always enjoy competing, playing the sport that I love. There’s always a lot of pressure to it. “–Agencies