Southampton - Brooks Koepka became the first player in three decades to repeat as US Open champion on Sunday, firing a final round 68 at Shinnecock Hills to beat Tommy Fleetwood by one stroke.

A year after he marched to victory with a 16-under total at Erin Hills, Koepka kept his nerve on the back nine to emerge with a one-over-par total of 281.

The world No 9 is the first player since Curtis Strange in 1988-89 to win back-to-back US Open titles.

"It hasn't sunk in yet," Koepka said. "I don't think I could have dreamed of this going back to back.

"Feels good to hold that thing again," he said as he hoisted the trophy.

England's 12th-ranked Fleetwood matched the lowest round ever in the US Open with a brilliant seven-under 63 for a two-over total of 282.

READ:England's Fleetwood matches US Open record

Fleetwood had stormed into the clubhouse with a round that included eight birdies, putting the pressure on overnight leaders Koepka, Dustin Johnson, Daniel Berger and Tony Finau.

Only Koepka met the challenge.

He stretched his lead to two strokes with a birdie at the par-five 16th, where he stuck his third shot less than four feet from the pin.

His approach at 18 hit a grandstand and bounced off, but a closing bogey was enough.

Of the four overnight leaders, Koepka was the only player to shoot an under par final round

World No 1 Johnson, playing alongside Koepka in the penultimate group, carded an even-par 70 to finish alone in third on 283.

Masters champion Patrick Reed closed with a two-under 68 to finish fourth at four-over.

Finau, playing in the final group with Berger, closed with a double-bogey at the 72nd hole for a 72 that left him in fifth on 285. 

Berger faded early, his 73 leaving him tied for sixth on six-over with England's Tyrrell Hatton, American Xander Schauffele and Sweden's Henrik Stenson.

Final round scores on Sunday in the 118th US Open Golf Championship at Shinnecock Hills (USA unless noted, par-70):

281 - Brooks Koepka 75-66-72-68

282 - Tommy Fleetwood (ENG) 75-66-78-63

283 - Dustin Johnson 69-67-77-70

284 - Patrick Reed 73-72-71-68

285 - Tony Finau 75-72-66-72

286 - Xander Schauffele 72-74-72-68, Daniel Berger 76-71-66-73, Tyrrell Hatton (ENG) 75-70-72-69, Henrik Stenson (SWE) 71-70-74-71

287 - Justin Rose (ENG) 71-70-73-73, 287 - Webb Simpson 76-71-71-69

288 - Russell Knox (SCO) 73-71-75-69, Zach Johnson 73-73-72-70 Matthew Fitzpatrick (ENG) 73-70-75-70

289 - Kiradech Aphibarnrat (THA) 76-72-68-73

290 - Li Haotong (CHN) 79-68-74-69, Hideki Matsuyama (JPN) 75-70-79-66, Paul Casey (ENG) 73-73-73-71, Louis Oosthuizen (RSA) 74-72-75-69

291 - Steve Stricker 73-75-73-70, Rickie Fowler 73-69-84-65, Charley Hoffman 71-69-77-74, Brian Gay 73-74-70-74, Dylan Meyer 77-69-71-74

292 - Francesco Molinari (ITA) 75-72-72-73, Aaron Baddeley (AUS) 74-72-77-69, Alex Noren (SWE) 72-72-77-71, Jason Dufner 70-74-79-69, Russell Henley 69-73-77-73, Matthieu Pavon (FRA) 71-77-74-70, Charles Howell III 71-72-77-72, Branden Grace (RSA) 76-69-72-75, Justin Thomas 74-70-74-74, Bryson DeChambeau 76-69-73-74, Ian Poulter (ENG) 69-72-76-75

293 - Pat Perez 73-71-77-72, Bill Haas 76-72-74-71, Brian Harman 74-70-78-71, Rafael Cabrera Bello (ESP) 73-71-76-73, Gary Woodland 79-69-70-75

294 - Sam Burns 71-76-75-72, Ryan Fox (NZL) 73-72-74-75, Patrick Rodgers 72-72-83-67, Jhonattan Vegas (VEN) 76-72-73-73

295 - Marc Leishman (AUS) 74-69-78-74, Scott Piercy 69-71-79-76, Patrick Cantlay 75-71-76-73, Brandt Snedeker 72-76-73-74

296 - Phil Mickelson 77-69-81-69, Peter Uihlein 75-72-75-74, Ross Fisher (ENG) 76-71-79-70, Luis Gagne (CRC) 73-74-75-74, Matt Parziale 74-73-74-75, Tim Wilkinson (NZL) 76-72-78-70, Jim Furyk 73-71-72-80

297 - Dean Burmester (RSA) 75-73-75-74, Chris Naegel 73-73-75-76, Jimmy Walker 75-70-79-73, Mickey DeMorat 72-72-80-73, Tyler Duncan 77-67-81-72

298 - Calum Hill (SCO) 75-69-81-73

299 - Andrew Johnston (ENG) 73-73-82-71

300 - Brendan Steele 72-73-75-80

301 - Cameron Wilson 75-73-76-77

302 - Kevin Chappell 75-72-78-77

303 - Will Grimmer 73-72-78-80

306 - An Byeong-hun (KOR) 71-76-81-78