Smith eagled the 72nd hole of the 2015 U.S. Open at Chambers Bay to finish in a tie for fourth, earning a spot in the 2016 championship, in which he finished tied for 59th. Smith won his first PGA Tour event in 2017, capturing the Zurich Classic of New Orleans with partner Jonas Blixt. He earned a spot in his third U.S. Open by way of being ranked No. 41 in the Official World Golf Ranking on May 21.
U.S. Open Record
| YEAR | SITE | SCORES | TO PAR | FINISH |
| 2018 | Shinnecock Hills Golf Club | 79-72 | +11 | MC |
| 2016 | Oakmont Country Club | 71-75-70-79--295 | +15 | T-59 |
| 2015 | Chambers Bay | 70-70-69-68--277 | -3 | T-4 |