Paul Annacone, a former Top 15 tennis player and once coach to Roger Federer, said in 2017, "I think Nick is the most talented player since Roger jumped on the scene."
Paul Annacone, un ex top dez tenista e adestrador de Roger Federer, dixo en 2017: "Creo que Nick é o jugador máis talentoso dende que Roger saltou á escena".