Yujeong Son of Norman, Oklahoma, is No. 7 in the AJGA Rankings. The 16-year-old won national junior golf titles at the 2014 Justin Rose Junior All-Star Invitational at Reynolds Lake Oconee and most recently, the 2017 Kathy Whitworth Invitational. Son is a two-time Rolex Junior All-American and will compete at her first Wyndham Cup this year with the West Team.
| Rank | Event | R1 | R2 | R3 | R4 | Total |
| T10 | Rolex Girls Junior Championship | 73 | 76 | 69 | 70 | 288 |
| T20 | ANA Junior Inspiration | 77 | 78 | 71 | 226 | |
| 1 | 2017 Kathy Whitworth Invitational | 71 | 71 | 142 | ||
| T9 | 2016 Polo Golf Junior Classic | 74 | 73 | 147 | ||
| 14 | The PING Invitational | 70 | 77 | 78 | 225 | |
| T12 | 2016 Junior PGA Championship | 74 | 71 | 71 | 216 | |
| T3 | 2016 U.S. Girls' Junior Championship | 76 | 78 | 154 | ||
| 2 | Yani Tseng Invitational presented by the Swinging Skirts | 71 | 71 | 65 | 207 |