I can win the most Grand Slams, break record for longest no. 1: Djokovic

World number one tennis player Novak Djokovic has said that he "believes" he can break the record of winning the most number of Grand Slam titles and also become the longest-reigning top-ranked player. "I don't believe in limits...limits are only illusions of your ego...your mind," Djokovic stated. Currently, the 20-time Grand Slam champion Roger Federer holds both the records.