Koepka was only the third to successfully defend the title since World War II, following Ben Hogan (1951) and Curtis Strange (1989).

Lengths of the course for previous major championships: Source:[2] About half the field consisted of players who were exempt from qualifying for the U.S. Open.

The top 60 point leaders and ties as of June 11, 2018, in the Official World Golf Ranking 15.

Special exemptions given by the USGA[5] The remaining contestants earned their places through sectional qualifiers.

Alternates who gained entry: (a) denotes amateur (L) denotes player advanced through local qualifying Thursday, June 14, 2018 Conditions were extremely difficult as gusty winds hung around all day with sunny skies, making the course firm and fast.

[7][8] Source:[9] Friday, June 15, 2018 Dustin Johnson held the lead after shooting a 67, four shots ahead of Charley Hoffman and Scott Piercy.

[10] Source:[9] Amateurs: Grimmer (+5), Gagne (+7), Parziale (+7), Thornberry (+9), Strafaci (+10), Ghim (+13), Rasmussen (+14), Hagestad (+15), Bergeron (+16), Humphrey (+16), Yu (+17), Huang (+18), Lumsden (+18), Rank (+18), Reitan (+18), Wiseman (+18), Ban (+19), Ellis (+19), Goodwin (+19), Barbaree (+21) Saturday, June 16, 2018 Second round leader Dustin Johnson shot a seven-over 77 to fall into a four-way tie with Daniel Berger, Tony Finau and defending champion Brooks Koepka.

He made his only birdie of the round at the 11th to get back to the top of the leaderboard, but three-putted for bogey on 18 to settle for a share of the 54-hole lead.

[16][17][18] Source:[9] Amateurs: Parziale (+11), Gagne (+12), Grimmer (+13) Sunday, June 17, 2018 Brooks Koepka shot a final round 68 (−2) to finish one ahead of Tommy Fleetwood and win the U.S. Open for the second straight year.

Koepka began the round in a four-way tie for the lead with Dustin Johnson, Daniel Berger, and Tony Finau.

Fleetwood had an eight-foot putt at the 18th for the first 62 in U.S. Open history, but it slid past the hole that would have forced the first two-hole playoff.

Final round Cumulative tournament scores, relative to par Source:[9] This was the fourth U.S. Open televised by Fox and FS1.