SOUTHAMPTON, NY - JUNE 14: (L-R) Rory McIlroy of Northern Ireland, Jordan Spieth of the United States, and Phil Mickelson of the United States walk up the tenth green during the first round of the 2018 U.S. Open at Shinnecock Hills Golf Club on June 14, 2018 in Southampton, New York. (Photo by Streeter Lecka/Getty Images)