Getty SOUTHAMPTON, NEW YORK - JUNE 17: Joaquin Niemann of Chile looks on on the 11th green during a practice round prior to the 126th U.S. OPEN at Shinnecock Hills Golf Club on June 17, 2026 in Southampton, New York. (Photo by Kate McShane/Getty Images) J oaquín Niemann’s opening round at the 2026 U.S. Open unraveled in dramatic fashion after the USGA handed the LIV Golf star a rare two-stroke penalty for an on-course outburst at Shinnecock Hills. The incident occurred on the par-4 sixth hole