Judging by Fox's broadcast of the event, you wouldn't be blamed for thinking it was also the network's first crack at airing the Open.
This is what Buck said as they kissed: "His girlfriend, Becky Edwards, an all-American soccer player at Florida State."Oops!" Joe Buck misidentified Sims as Koepka's ex-girlfriend, Becky Edwards.
It was not long before critics took to social media, expressing their views and, while most found humor in the mistake, others were up-in-arms.
South Korea to scrap building new nuclear power plants
In addition to phasing out the country's use of nuclear energy, Moon has also pledged to reduce South Korea's use of coal-fired power generation.
Buck's broadcasting partner, Brad Faxon, soon corrected the error.
Meet Jen Sims, a 28-year-old American actress, model, and former Miss Teen USA competitor. She's actually going to be in the new Sharknado.
Brooks Koepka poses with the winner's trophy and his girlfriend, Jena Sims, after his victory at the 2017 U.S. Open on Sunday.
Of all the names Buck has had to memorize over the years, Sims' may be one he'll remember for quite a while.