John McEnroe, The Rocker Boy of Bald: For more than three decades, John McEnroe has managed to stay relevant and his hairline is no exception. The curly, clown-esque locks of his early career seemed to complement his outlandish on-court antics. But even this seasoned tennis vet isn’t recession-proof. Perhaps his thinner hair is the reason behind his (somewhat) more subdued public persona. Nice try, Johnny Mac.