LOS ANGELES — Before the final round of the 123rd U.S. Open, mental coach Julie Elion told her pupil Wyndham Clark, who had never won on the PGA Tour in five seasons until May and had never finished better than T-75 in a major, that he could stare down Rory McIlroy, playing in the group ahead of him, and Rickie Fowler, another of the most popular players in the game.
