Cameron Sisk of El Cajon, California, is playing in his first Wyndham Cup. He qualified into the event for the West Team after a string of impressive finishes. He had top finishes at the 2018 PING Heather Farr Classic and the 2018 Thunderbird International Junior. Sisk is verbally committed to Arizona State University and is currently No. 44 in the Rolex AJGA Rankings.
| Rank | Event | R1 | R2 | R3 | R4 | Total |
| T10 | Thunderbird International Junior | 75 | 68 | 69 | 212 | |
| T35 | 2018 Junior Invitational at Sage Valley Golf Club | 75 | 79 | 79 | 233 | |
| 3 | PING Heather Farr Classic | 71 | 71 | 64 | 206 | |
| T21 | Rolex Tournament of Champions | 75 | 72 | 68 | 76 | 291 |
| T16 | The PING Invitational | 75 | 76 | 72 | 223 | |
| T19 | The Junior PLAYERS Championship presented by TaylorMade-adidas Golf | 72 | 74 | 72 | 218 | |
| T14 | 2017 Junior PGA Championship - Boys | 69 | 72 | 68 | 74 | 283 |
| T33 | 2017 U.S. Junior Amateur Championship | 75 | 67 | 142 | ||
| T30 | 2017 IMG Academy Junior World Championship | 76 | 74 | 72 | 74 | 296 |