Sadie Engelmann of Austin, Texas, is playing in her first Wyndham Cup. She qualified into the event for the West Team after a string of impressive finishes. She won the Under Armour / Jordan Spieth Championship presented by American Campus Communities in 2017 and the 2018 Buick Shanshan Feng Girls Invitational. She also had top finishes at the Sergio and Angela Garcia Foundation Junior Championship presented by Callaway Golf and The PING Invitational. Englemann is verbally committed to Stanford University and is currently No. 9 in the Rolex AJGA Rankings.
| Rank | Event | R1 | R2 | R3 | R4 | Total |
| T2 | Thunderbird International Junior | 72 | 70 | 70 | 212 | |
| 25 | ANA Junior Inspiration | 74 | 79 | 72 | 225 | |
| 3 | Sergio and Angela Garcia Foundation Junior Championship presented by Callaway Golf | 72 | 73 | 72 | 217 | |
| 1 | Buick Shanshan Feng Girls Invitational | 71 | 71 | 69 | 211 | |
| T23 | ANNIKA Invitational USA presented by Rolex | 75 | 74 | 77 | 226 | |
| T58 | Rolex Tournament of Champions | 77 | 79 | 83 | 73 | 312 |
| T7 | The PING Invitational | 75 | 73 | 72 | 220 | |
| 1 | Under Armour® / Jordan Spieth Championship presented by American Campus Communities | 73 | 70 | 34 | 177 | |
| 10 | 2017 Junior PGA Championship - Girls | 69 | 73 | 68 | 71 | 281 |