Koepka, 33, took to his social media channels with a smile on Friday as he revealed his new look before going on to post an opening 3-under 68 at LIV Golf Chicago.
Sergio Garcia is in a share of the lead following round one thanks to a 5-under 67.
He is joined on that score by Anirban Lahiri, Jediah Morgan, Sebastian Munoz and Louis Oosthuizen.
But back to the original story and it's Koepka's new mullet that has got golf fans talking, especially ahead of the biennial contest in Italy next week.
Koepka, who earned one of Zach Johnson's six captain's picks in the team at the end of last month, is making his fourth straight United States side.
Here's a look at Koepka's new hair cut that he labels 'Freedom Flow':
Freedom Flow pic.twitter.com/S63ZAZoU1k— Brooks Koepka (@BKoepka) September 22, 2023
Here's how some golf fans reacted:
Love it, American hero!
Oh my that's a strong look BK
If you catch yourself doing “achy breaky heart”, you’ve gone too far!
What have you done?!
The guy she told you not worry about
Will Rickie get one too?
Europe might as well not turn up!
I think JT needs to follow suit
Does Jena approve BK?
Koepka isn't the only US Ryder Cup player to opt for a mullet.
Sam Burns, who is making his debut in the team, has also opted for one.
Burns also showed his off on social media:
What do you make of their new mullets? Will we see anyone else rock a mullet at the Ryder Cup? Who will win the Ryder Cup? Share your thoughts and comments over on the GolfMagic social media channels.