Na posted his best finish in seven U.S. Open starts by placing solo seventh at Oakmont (Pa.) Country Club in 2016. shooting three sub-70 rounds at Oakmont Country Club to place solo seventh. His lone PGA Tour victory thus far is the 2011 Justin Timberlake Shriners Hospitals for Children Open, though he owns four other victories worldwide. 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.
U.S. Open Record
| Year | Site | Scores | To Par | Finish |
| 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 | 74-71-71-73--289 | +9 | T-29 |
| 2011 | Congressional Country Club | 80-75 | +13 | MC |
| 2010 | Pebble Beach Golf Links | 80-77 | +15 | MC |