One day in 1977, about a year after Bruce Jenner shattered a world record to win the decathlon gold medal at the Montreal Summer Olympics, he met up with his sportswriter friend Barry McDermott to play tennis in New York City. McDermott suggested a match at his private club — but that wasn’t Jenner’s style. Privacy was never his priority. The pair went to Central Park, where word quickly spread that Bruce Jenner (Bruce Jenner!) was playing on the public courts. McDermott remembers the crowd growing, as he had known it would, gawkers pressed against the chain-link fence, watching the...