Having bagged his first major career title, the athlete walked off the 18th hole and straight to girlfriend, Jena Sims for a celebratory kiss.
The relationship between Koepka and Sims was fairly unknown before the major championship in Wisconsin.
Buck mentioned Becky Edwards, a professional soccer player whom Koepka used to date.
"Joe, that's actually his new girlfriend", commentator Brad Faxon said.
Jena Sims, a 28-year-old former Miss Georgia Teen USA who's done acting and modeling work. "That's Jena Sims", The Washington Post noted.
- Iran says missile attack on IS in Syria coordinated with Damascus
- Trump supporters turn on special counsel Mueller
- Congressman's condition 'more difficult' than first thought
- NASA telescope finds 10 more planets that could have life
- IBM's 5nm nanosheet chips could revolutionize the IoT market
- Newtown parent won't view NBC interview of Alex Jones
- Helmut Kohl, father of German reunification, dies at 87
- Jared Kushner delivers remarks at White House tech summit
- Six-way tie atop US Open leaderboard
- Confederations Cup: Socceroos v Germany - Everything you need to know