Snooker superstar Ronnie O’Sullivan says he has a great level of admiration for Novak Djokovic as he has called the Serb “the best player of all time” and the player who will finish with the most Grand Slams. O’Sullivan, a six-time World Champion in snooker, is one of the greatest players in snooker history. O’Sullivan is a tennis fan it is not a secret that he enjoys watching Djokovic, Roger Federer and Rafael Nadal. “You have to admire Djokovic. He is the best player of all time and will win the most Grand Slams in the history of tennis …