In June 2018, Johnson opened up the U.S. Open at Shinnecock Hills with rounds of 69-67 for a 4-under-par total to hold the 36-hole lead by four strokes, the only player under par at the halfway stage. He then shot a 77 during a tough third round, which dropped him back into a four-way tie for lead heading into the final round. He shot even par in the final round and finished in third place.