Koepka claimed his first major championship at the U.S. Open in 2017 at Erin Hills, Wisconsin. He successfully defended his title in 2018 at Shinnecock Hills on Long Island, the first golfer to win consecutive U.S. Opens since Curtis Strange in 1988 and 1989. He won his third major at the 2018 PGA Championship at Bellerive Country Club, shooting a major-championship-record-tying 264 over 72 holes. His 2018 victories in the U.S. Open and the PGA Championship were the first instance of that double since Tiger Woods in 2000. He won his fourth major at the 2019 PGA Championship at Bethpage Black.