A chronicle of the first major win for Brooks Koepka, who conquered golf's ultimate test at Erin Hills to win the 2017 U.S. Open Championship.A chronicle of the first major win for Brooks Koepka, who conquered golf's ultimate test at Erin Hills to win the 2017 U.S. Open Championship.A chronicle of the first major win for Brooks Koepka, who conquered golf's ultimate test at Erin Hills to win the 2017 U.S. Open Championship.