However, Sunday's win wasn't just any old win for Koepka.
His well-documented journey to the PGA Tour took him to remote outposts like Kenya and Kazakhstan.
And then he endured the toughest day of his career Sunday, which turned into the most rewarding.
Heading to the 18th hole, Koepka just needed a bogey to win the tournament.
It will be Koepka's ninth week as the world's top-ranked player.
The one negative thing the outcome did was decelerate what appeared to be Koepka's downhill run to parity with the game's greats.
This one should have been. The American, who had held a seven-stroke lead at the start of the final round, nearly lost control of the title when he made four successive bogeys from the 11th hole before staving off Dustin Johnson for a two-stroke victory at Bethpage Black. Motivated by the crowd turning on him, Koepka delivered the key shots over the closing stretch as Johnson faded with two straight bogeys. Johnson faded with two bogeys. Four holes later, Koepka walked off the 15th tee with a one-shot lead.
His place in history was secure. Wiring the PGA Championship field made the sportsbook managers job easy. He became the only player to hold back-to-back titles in two majors at the same time. There were only four out of48 events that did so in the 2017-18 season, five the year before that, and only two the year before that.
He's the first player to win four majors in eight tries since Woods from 2005-06.
"I'm excited to get over there", Koepka said. "He obviously gets into these mindsets of the majors, and he really goes and gets into a different state". But that doesn't mean you should bet the house on him, though.
Tiger Woods, who collected his 80 PGA TOUR title at the 2018 TOUR Championship, sits 20 in the FedExCup standings after missing the cut in what was his first start since his historic victory at the Masters. Koepka was starting to draw comparisons with Woods for the way he obliterated the competition at Bethpage Black, much like Woods used to do.
But that trophy spoke volumes. Koepka admits it was a little nerve racking, but he says this is his most satisfying victory. "What do you expect when you're half-choking it away?" "I think I kind of deserved it".
And then it all changed in a NY minute. I think it actually helped. "I'm just hoping somehow to do some of the same".
Spieth fired a one-over 71 in the final round at a tough Bethpage Black, where he felt it was always going to be hard. He hit a 5-iron from 194 into the fan - he though about 4-iron because he wasn't sure 5-iron would get to the green - and was stunned when it one-hopped into the rough. When his 6-foot par putt fell on the last hole, Koepka thrust his muscular right arm in the air and hugged his caddie hard.
"I had about 30 seconds left", Varner said of the search. "That's all you can ask for". Koepka held it together at the most crucial moment. "This was, by far, the most stressful".
All four of Koepka's major wins have come on courses where power was key, but next month's U.S. Open and July's British Open at Royal Portrush will test whether he can dominate on courses where finesse is just as important as brute strength.
No one has won three straight U.S. Open titles since Willie Anderson in 1905.