Stadium: Court 7 Round: 44
| ITF Women Daegu Qual | 2018/06/17 02:00 | You-Na Sul v Seunghyun Lee | 6-3,6-1 |
| ITF Women Gyeongsan Qual | 2018/06/12 01:00 | Fatima Bizhukova v You-Na Sul | 6-1,6-0 |
| ITF Women Gyeongsan Qual | 2018/06/11 01:00 | You-Na Sul v So-Hee Yoon | 6-1,6-3 |
| ITF Women Changwon | 2018/05/22 04:15 | Victoria Rodriguez v You-Na Sul | 5-7,7-5,6-1 |
| ITF Women Incheon Qual | 2018/05/13 01:00 | You-Na Sul v Yu Jin Ahn | 4-6,3-6 |
| ITF Women Goyang Qual | 2018/05/07 01:30 | Akiko Omae v You-Na Sul | 6-4,6-3 |
| ITF Women Yeongwol | 2017/09/07 03:40 | Seung-Yeon Hong v You-Na Sul | 6-1,6-4 |
| ITF Women Yeongwol | 2017/09/06 01:00 | Dami Lee v You-Na Sul | 3-6,2-6 |
| ITF Women Gyeongsan | 2018/06/13 05:55 | Chisa Hosonuma v Yeong Won Jeong | 4-6,3-6 |
| ITF Women Gyeongsan Qual | 2018/06/12 01:00 | Yeong Won Jeong v Mami Hasegawa | 6-4,7-6 |
| ITF Women Gyeongsan Qual | 2018/06/11 02:00 | Yeong Won Jeong v Da Hye Kim | 6-1,7-6 |
| ITF Women Sangju Qual | 2018/06/04 01:00 | Yeong Won Jeong v Eri Shimizu | 5-7,4-6 |
| ITF Women Changwon Qual | 2018/05/20 03:00 | Erin Routliffe v Yeong Won Jeong | 6-1,6-2 |
| ITF Women Incheon Qual | 2018/05/14 03:30 | Yeong Won Jeong v Erin Routliffe | 4-6,0-6 |
| ITF Women Incheon Qual | 2018/05/13 03:30 | Yeong Won Jeong v Eunji Lim | 6-3,6-3 |
| ITF Women Goyang | 2018/05/09 05:45 | Yeong Won Jeong v Mayo Hibi | 0-6,3-6 |