It was the first time in four years that the American won a major, his last one being the 2019 PGA Championship that was held at Bethpage Black.
Koepka has been solid all year as he finally returned to full health after years of nagging injuries that kept him from seriously contending.
During the midst of his injuries, Koepka left the PGA Tour and signed with Norman's rival LIV Golf series.
He quickly became the league's first two-time winner after he claimed his second victory in Orlando earlier this season.
This week, Koepka didn't let the tournament slip away to claim his third PGA Championship title.
He also became the first LIV Golf player to win a major championship since joining the rival series.
Norman, unsurprisingly, congratulated his star player following Sunday's final round, tweeting:
He then went on to congratulate the rest of the LIV Golf contingent at the tournament:
Congrats @BKoepka your comeback has been impressive. I am so proud of you. As for the @livgolf_league players they belong and the Majors and golf knows. 3 LIV Golfers in the top 10, 5 in the top 20, 11 made the cut.— Greg Norman (@SharkGregNorman) May 21, 2023
As for Koepka, however, he said he had not yet spoken to the LIV Golf CEO during his winner's press conference:
“I called my wife, and that's it,” he told reporters after being asked if he'd heard from the LIV boss, adding:
Koepka admitted that his victory was an important achievement for the new LIV Golf league, but he was also adamant that he's focusing on what it means to him as an individual:
Koepka and the rest of LIV Golf will now head to Washington, D.C., for the league's seventh event of the 2023 season.