The notion that Nick and Pat McEnroe did not "endorse" serve and volley and that is why it did not happen is ridiculous. When Nick started his academy, he was hand to mouth, and students sometimes slept in his apartment. Now, the best in the world train at his academy. Listening to this forum, they are all fools and should be losing to these posters here.
John Isner must have thought: I am the second tallest guy on the tour and when I come to the net, my wingspan is like an albatross. But since Agassi was a baseliner and I did not get email from Pat McEnroe to serve and volley, I am going to NOT use my advantages. And his stupid coach who knows less than the knowledgable posters here went: Righto, why would you want to win when you can lose?