Na posted his best finish in 10 U.S. Open starts by placing solo seventh at Oakmont (Pa.) Country Club in 2016, shooting three sub-70 rounds at the iconic venue. He earned his fifth PGA Tour victory in the 2021 Sony Open of Hawaii. Born in the Republic of Korea, Na emigrated to the U.S. when he was eight years old and left Diamond Bar High School in Southern California after his junior year to turn professional at age 17. He earned his 11th U.S. Open start by qualifying for the season-ending Tour Championship.
U.S. Open Record
| Year | Site | Scores | To Par | Finish |
| 2021 | Torrey Pines Golf Course (South Course) | 77-73 | +8 | MC |
| 2020 | Winged Foot Golf Club (West Course) | 75-77 | +12 | MC |
| 2019 | Pebble Beach Golf Links | 72-77 | +7 | MC |
| 2017 | Erin Hills | 68-76-73-71--288 | E | T-32 |
| 2016 | Oakmont Country Club | 75-68-69-69--291 | +1 | 7th |
| 2015 | Chambers Bay | 70-72-72-74--288 | +8 | T-46 |
| 2014 | Pinehurst Resort & C.C. (Course No. 2) | 68-69-73-73--283 | +3 | T-12 |
| 2012 | The Olympic Club (Lake Course) | 74-71-71-73--289 | +9 | T-29 |
| 2011 | Congressional Country Club (Blue Course) | 80-75 | +13 | MC |
| 2010 | Pebble Beach Golf Links | 80-77 | +15 | MC |