mo4ch:>Alexander Zverev can be the next big Grand Slam star, says Roger Federer | Mo4ch News

German star Alexander Zverev could become the next Grand Slam star of world tennis. That's the view of a man who has been at the top of the sport over 15 years, Roger Federer.The Swiss ace was speaking to reporters following his straight-sets second-round victory over Britain's Daniel Evans at the Australian Open in Melbourne.And the 20-time Grand Slam tournament champion heaped praise on the 21-year-old German star, who captured the 2018 ATP World Tour Finals - his first major title on the tour."With 'Sascha' holding the World Tour Finals, I think it’s fair to say that even though he has not ripped through those (Grand) Slams yet, he will go deep this year definitely at one of them," he said.Zverev successfully progressed to the third round of the Australian Open on Thursday with a five-set victory over Frenchman Jérémy Chardy.Zverev raced into a two-set lead before Chardy mounted a spirited fightback to take the match into a deciding set.But Zverev showed h…