John Keefer of San Antonio, Texas, is playing in his first Wyndham Cup. He qualified into the event for the West Team after a string of impressive finishes. He won the Sergio and Angela Garcia Foundation Junior Championship presented by Callaway Golf in 2018. He also had top finishes at the 2017 Under Armour / Jordan Spieth Championship presented by American Campus Communities. Keefer is verbally committed to Baylor University and is currently No. 38 in the Rolex AJGA Rankings.
| Rank | Event | R1 | R2 | R3 | R4 | Total |
| T45 | 2018 Western Junior Championship | 72 | 71 | 143 | ||
| T21 | Thunderbird International Junior | 74 | 76 | 68 | 218 | |
| T42 | PING Heather Farr Classic | 78 | 71 | 75 | 224 | |
| 1 | Sergio and Angela Garcia Foundation Junior Championship presented by Callaway Golf | 70 | 67 | 74 | 211 | |
| T17 | Under Armour® / Jordan Spieth Championship presented by American Campus Communities | 77 | 73 | 34 | 184 | |
| T24 | 2017 IMG Academy Junior World Championship | 76 | 71 | 75 | 73 | 295 |