Thursday
At Castle Pines Golf Club
Castle Rock, Colo.
Purse: $20 million
Yardage: 8,130; Par: 72
First Round
| Keegan Bradley | 33-33—66 |
| Hideki Matsuyama | 33-34—67 |
| Corey Conners | 34-34—68 |
| Sungjae Im | 32-36—68 |
| Alex Noren | 34-34—68 |
| Adam Scott | 36-32—68 |
| Nick Dunlap | 33-36—69 |
| Si Woo Kim | 33-36—69 |
| Xander Schauffele | 34-35—69 |
| Tony Finau | 32-38—70 |
| Russell Henley | 36-34—70 |
| Rory McIlroy | 35-35—70 |
| Collin Morikawa | 36-34—70 |
| J.T. Poston | 35-35—70 |
| Patrick Cantlay | 36-35—71 |
| Austin Eckroat | 34-37—71 |
| Billy Horschel | 37-34—71 |
| Viktor Hovland | 35-36—71 |
| Denny McCarthy | 35-36—71 |
| Scottie Scheffler | 36-35—71 |
| Will Zalatoris | 35-36—71 |
| Ludvig Aberg | 35-37—72 |
| Byeong Hun An | 35-37—72 |
| Akshay Bhatia | 35-37—72 |
| Wyndham Clark | 34-38—72 |
| Cameron Davis | 35-37—72 |
| Thomas Detry | 37-35—72 |
| Tommy Fleetwood | 38-34—72 |
| Brian Harman | 38-34—72 |
| Tom Hoge | 38-34—72 |
| Robert Macintyre | 37-35—72 |
| Taylor Pendrith | 36-36—72 |
| Sepp Straka | 38-34—72 |
| Sam Burns | 38-35—73 |
| Chris Kirk | 34-39—73 |
| Matthieu Pavon | 37-36—73 |
| Sahith Theegala | 36-37—73 |
| Christiaan Bezuidenhout | 38-36—74 |
| Matt Fitzpatrick | 35-39—74 |
| Max Homa | 37-37—74 |
| Aaron Rai | 35-39—74 |
| Shane Lowry | 38-37—75 |
| Cameron Young | 37-38—75 |
| Adam Hadwin | 38-38—76 |
| Stephan Jaeger | 36-40—76 |
| Justin Thomas | 37-39—76 |
| Davis Thompson | 38-38—76 |
| Eric Cole | 39-38—77 |
| Jason Day | 41-37—78 |
| Max Greyserman | 39-39—78 |