Gill Gross responds to your comments... why is there so much match-fixing in tennis, who are the best players without a slam and the worst with one, what would I add to the games of David Ferrer, Gael Monfils, Milos Raonic, and Kei Nishikori in order to give them the best chance at winning a major, what will the Big-3 do after retirement, what did Roger Federer do for increased success against Rafael Nadal, how can Nadal turn around results against Novak Djkovic, what is my racket setup, which American will have the best career out of Francis Tiafoe, Taylor Fritz and Rielley Opelka, what if Andy Murray had an elite forehand, what should Daniil Medvedev, Stefanos Tsitsipas and Dominic Thiem work on during the time off?