In an interview to La Gazzetta dello Sport the eight-time Major winner Ivan Lendl was asked about the NextGen: "The Big Three are the best on Tour. But something is happening for the next generation. Zverev, Medvedev and Tsitsipas won important titles.
Sooner or later the generational switch will happen and Roger Federer will just be a father." How can a player be motivated for such a long time? "When I played, my goal was to win most Major titles. I admit I did not manage to do it.
I think for Roger, Novak and Rafa to hold most Majors is a big motivation, but if you ask me what will happen at the end of their careers, I'd rather sit and wait. Wimbledon was important, if Federer had won, Novak would have been six titles away..."
But why does a younger player struggle in breaking through? "Because of many reasons: body, experience, age. When I played, at 30 years you were done. Now with the new training and eating methods, at 35 you are still very competitive."
Asked if he thinks on-court coaching should be introduced on the Tour, Lendl concluded: "It depends on how long it takes to a player to learn. I would definitely make it mandatory in the sub 12 age tournaments in order not to make parents get involved too much. A good coach gives you advice to grow, not to win matches."