Brooks Koepka has warned there is so much more to come from him after capturing his maiden major title at the US Open.
The 27-year-old pulled clear of nearest rival Brian Harman at Erin Hills after three birdies in a row from the 14th to 16th holes and finished four clear on 16-under-par, matching Rory McIlroy's scoring record in relation to par at the 2011 US Open.
With the win, the American is now the seventh first-time major winner in a row, following on from Sergio Garcia, Jimmy Walker, Henrik Stenson, Dustin Johnson, Danny Willett and Jason Day - and despite being in his mid-20s, he believes he should've been in the position to taste major glory far sooner.
"I've been trying to win so badly - I felt like I've underachieved," he said. "And the more patient that I can become, the more times I'll put myself in this situation."
Koepka took the unusual route for an American of graduating via the Challenge Tour and European Tour and, when asked why he felt he was an underachiever, he referenced his lack of victories on both of the main tours to date.
"I'd won once on the PGA Tour, once on the European Tour and I felt like I put myself in contention so many times and never really quite came through. But I just felt like I should be winning more. It's one of those things. I'm not a big fan of losing, I don't think anyone here is, and I just couldn't stand the fact that I'd only won once."
Moving forward, Koepka fully expects his victory at Erin Hills to be a springboard to more major championship success as he aims to cement himself as one of the world's best players.
"My expectations are pretty high," he added. "I said at the start of the year I thought I needed to win multiple times and a major. I'm sure someone heard me say that.
"I think the way my game is set-up I can win multiple times a year, I really do. And I think this is hopefully major number one and there's many more to come."
The win has lifted Koepka into a career-high No.10 in the world rankings.