Stadium: Court 11 Round: 25 Ground: Hardcourt outdoor
| ITF Women Kashiwa Qual | 2018/04/01 05:00 | Yoshitomi, Aiko v Jeong, Sunam | 1-6,6-7 |
| ITF Women Gimcheon | 2017/06/14 01:00 | Jeong, Sunam v Yoshitomi, Aiko | 6-3,1-6,6-3 |
| Daegu, Singles W-ITF-KOR-04A | 2019/06/04 01:00 | Pei-Chi Lee v Yoshitomi, Aiko | 6-0,6-1 |
| Daegu, Singles W-ITF-KOR-04A | 2019/06/03 01:00 | Hong, Seung-Yeon v Yoshitomi, Aiko | 4-6,4-6 |
| Perth, Qualifications Simples W-ITF-AUS-05A | 2019/02/21 03:10 | Yoshitomi, Aiko v Berezov, Anastasia | 6-7,4-6 |
| Perth, Qualifications Simples W-ITF-AUS-05A | 2019/02/19 03:30 | Yoshitomi, Aiko v Giorgie Jones | 6-2,6-4 |
| ITF - W15 Sharm El Sheikh | 2019/01/30 08:00 | Ponomar, Lisa v Yoshitomi, Aiko | 4-6,6-2,6-3 |
| ITF - W15 Sharm El Sheikh | 2019/01/23 08:00 | Yoshitomi, Aiko v Sherif, M. | 3-6,4-6 |
| ITF Women Toowoomba | 2018/10/08 05:00 | Marine Partaud v Yoshitomi, Aiko | 6-0,6-2 |
| ITF Women Toowoomba | 2018/10/08 01:30 | Bozicevic, Isabella v Yoshitomi, Aiko | 3-6,1-6 |
| Daegu, Singles W-ITF-KOR-04A | 2019/06/08 01:00 | Jeong, Sunam v Haruna Arakawa | 1-6,5-7 |
| Daegu, Singles W-ITF-KOR-04A | 2019/06/06 02:00 | Chanel Simmonds v Jeong, Sunam | 2-6,1-6 |
| Daegu, Singles W-ITF-KOR-04A | 2019/06/05 02:30 | Ueda, Ramu v Jeong, Sunam | 1-6,2-6 |
| ITF W25 Goyang | 2019/05/20 05:05 | Jeong, Sunam v Hong, Seung-Yeon | 6-2,3-6,2-10 |
| ITF W25 Changwon | 2019/05/15 02:20 | Jeong, Sunam v Eunhye Lee | 2-6,3-6 |
| Fed Cup, Groupe Mondial | 2019/02/09 06:55 | Ankita Raina v Jeong, Sunam | 6-3,6-3 |
| WTA Seoul | 2018/09/15 03:15 | Jeong, Sunam v Flink, Varvara | 2-6,6-3,0-6 |
| ITF Women Yeongwol | 2018/09/09 01:00 | Jeong, Sunam v Lee, So-Ra | 6-2,6-1 |