In the 2015 season, he finished seventh at the Shriners Hospitals for Children Open, runner-up at the Sony Open in Hawaii, tenth at the Shell Houston Open. In July, he won the inaugural Barbasol Championship in Alabama, an alternate event opposite the Open Championship, for his first victory in three years. At the 2016 U.S. Open At Oakmont, Piercy finished at a tie for second, his best major finish to date. Piercy was unable to defend his title in 2016 because he earned entry into the 2016 Open Championship.