Like his friend Andy Murray, he is a big-hearted gutsy, never-quit player, and, like Roger Federer, he is an analytical, thoughtful player. He uses his brain all the time. What all coaches tell their charges, he does perhaps more consistently than almost anyone else: “build the point” and “wait for the moment” to “release the trigger.” The idea is not only to “hit it where they ain’t,” but to put them in a position where you can do that.