He won the US Open by four shots, closing with a five-under 67 at Erin Hills to triumph with a 16-under total of 272 to tie the tournament record for lowest total under par, which was set by Rory McIlroy at Congressional Country Club in 2011.
"I needed something to go in and see that to build momentum off it, and just carried that over", Koepka said.
Koepka's breakthrough came in September 2012 on the European Tour's secondary Challenge Tour when he won in Spain just three months after turning pro.
ERIN, Wisconsin After days of being humbled, Erin Hills turned nasty for the U.S. Open's final round on Sunday as heavy winds pummeled the layout, adding an intriguing wrinkle to the year's second major.
Xander Schauffele, a rookie on the PGA Tour playing in his first U.S. Open, birdied his last hole for a 69 to tie for fifth at 10-under 268 along with Bill Haas (69) and Rickie Fowler (72), who was poised at yet another major to win only to fall back. "I would think they would want to change a few things if it comes back here, maybe narrow the fairways a little bit". "But, at the same time, I don't feel like I lost a golf tournament, I think Brooks went out and won the tournament".
'I just felt like I should be winning more.
From those unglamourous beginnings, Koepka worked his way up to the full European Tour before later earning his PGA Tour card in 2014. "It was something I thought was important, just to stay focussed and keep the pedal down".
Once the dust settled on the first 32 holes, it was obvious that this was going to be no ordinary U.S. Open. "You saw the leaderboard this weekend going into today, it's a lot of new blood, young guys", Fowler said.
"He told me 'Just stay patient".
Fortunately for Koepka, he chose to play the final round and went on to win by three shots, before attempting to drive through the night to contest final qualifying for the Open Championship.
ERIN, Wis. - Until Sunday, Brooks Koepka regarded himself as a golf underachiever.
Northern Irishman Graeme McDowell, in fact, told reporters this week at Erin Hills golf course that Koepka was "the most underrated American player in the world".
Koepka recorded three quick victories on the satellite circuit to make the step up to the European Tour before the Floridian eventually progressed to the USA -based PGA Tour.
"It was a long phone call for us".
"Because we played Tuesday practice round together and, I mean, he watched me play". He finished the event with a -16 score, tying Rory McIlroy's record for the US Open.
Tommy Fleetwood of England finished fourth at 277. It's one of those things, not a big fan of losing, I don't think anyone out here is.
"If I could do it over again, I'd play baseball-100 percent, no doubt", Koepka said.
Brian Harman, the leader after round three, tied for second along with No. 4 Hideki Matsuyama at 12-under.