Andy Murray rarely keeps quiet. If you’ve ever watched him play, especially in person, you know he doesn’t shut up. He grunts on every shot. He yelps while he chases down a ball. He berates himself. He howls and barks at his own player’s box, like a dog in a long-running feud with the backyard pool. If you were both riding the New York City subway, his frenzied demeanor and aimless muttering might prompt you to change cars.
Murray, who announced Friday that he would soon retire, was many things over his career—Grand Slam champion, gold medalist, world No.