The 27-year-old slid past American duo Scottie Scheffler and Will Zalatoris with a single shot to secure victory after a final day on the roller coaster.
“It’s like a big release, you finish the tournament and you’ve won and you realize you’ve accomplished one of your lifelong goals.
Fitzpatrick, a seven-time winner of the European Tour, had to wait for his first major, but he eventually won it in style.
Despite spells of wind wreaking havoc on the challenging par-70 course, Fitzpatrick never scored above par over the four rounds.
His 68, 70, 68 in the opening three rounds saw him arrive as co-leader alongside Zalatoris en route to the decisive day, where his third 68 was enough to take a one-stroke win at six under par.
As with any great sporting achievement, sacrifices had to be made along the way, but Fitzpatrick says all the hard work and dedication has been worth it.
“I just want to win. Whatever it takes, for me is what I have to do,” he added, laughing at how he recently hosted a bachelorette party but wasn’t there as he prepared for the US Open.
“I feel like what gives me an edge over other people is that dedication, going out like no one else and working hard and that’s what got me to this level.”
Jack Nicklaus record
In addition to securing a $3.15 million share of the $17.5 million total prize, the largest pot in the history of the major championship, Fitzpatrick has also equaled a very special record.
The world No. 18 is only the second player — and the first non-American — to have won both the US Amateur and US Open at the same venue, after winning at The Country Club in 2013.
Jack Nicklaus is the only other golfer to have achieved this feat after triumphing at Pebble Beach in 1961 and 1972.
“It’s amazing. The greatest golfer of all time. It’s incredible to share every single achievement he’s put in,” Fitzpatrick beamed.
“I’m so proud of myself for being able to achieve that and when you share records with Jack, it’s pretty special.”
Born and raised in the English city of Sheffield, Fitzpatrick owes his upbringing and close circle of family and friends who have kept him sober and grounded.
His mental fortitude was on full display at The Country Club last week, as were his known quirks.
Fitzpatrick does things differently for many golfers: he leaves the flag in when he puts and takes notes after every shot he makes.
Every shot except his last putt to secure the US Open.
“I didn’t even write down how close it was, but I remember, so I’ll do that later,” he laughed.
The next big goal for Fitzpatrick is the upcoming Open Championship in St Andrews, Scotland, and the Englishman is eager to add to his collection.
“I’m happy with it [major] but two would be through the roof,” he said, adding that he’s looking forward to celebrating his win.
“This is the greatest achievement of my career ever. I’m going to enjoy spending time with family and friends. Like I said, it’s just a really crazy special moment.”