Stadium: Court B4 Round: 54
| ITF Women Osaka Qual | 2018/04/08 03:30 | Satsuki Koike v Dabin Kim | 2-6,5-7 |
| ITF Women Osaka Qual | 2018/04/07 01:30 | Satsuki Koike v Suzuka Furukawa | 6-0,0-6,6-4 |
| ITF Women Nanjing Qual | 2018/03/24 05:30 | Satsuki Koike v Emma Raducanu | 0-6,0-6 |
| ITF Women Nanjing | 2018/03/17 02:30 | Satsuki Koike v Zoe Gwen Scandalis | 5-7,4-6 |
| ITF Women Toyota Qual | 2018/03/10 01:00 | Camilla Rosatello v Satsuki Koike | 6-2,6-2 |
| ITF Women Hamamatsu Qual | 2017/10/17 06:00 | Ingrid Neel v Satsuki Koike | 6-2,6-1 |
| ITF Women Makinohara Qual | 2017/10/09 02:30 | Satsuki Koike v Chinatsu Shimizu | 4-6,5-7 |
| ITF Women Makinohara Qual | 2017/10/08 05:00 | Rosalie Van Der Hoek v Satsuki Koike | 3-6,0-6 |
| ITF Women Osaka Qual | 2018/04/08 03:30 | Mami Hasegawa v Nicha Lertpitaksinchai | 6-2,6-7,4-6 |
| ITF Women Osaka Qual | 2018/04/07 04:00 | Nagomi Higashitani v Mami Hasegawa | 7-6,4-6,1-6 |
| ITF Women Kofu Qual | 2018/03/26 01:00 | Mami Hasegawa v Shiho Akita | 2-6,0-6 |
| ITF Women Kofu Qual | 2018/03/25 02:30 | Mami Hasegawa v Kotomi Takahata | 6-2,7-6 |
| ITF Women Kofu Qual | 2018/03/24 04:00 | Ling Zhang v Mami Hasegawa | 6-4,4-6,6-7 |
| ITF Women Nishi-Tama | 2018/03/22 03:00 | Mami Hasegawa v Giulia Gatto Monticone | 2-6,1-6 |
| ITF Women Nishi-Tama | 2018/03/21 02:00 | Mami Hasegawa v Makoto Yamaguchi | 6-4,6-2 |
| ITF Women Nishi-Tama | 2018/03/19 01:00 | Yukina Saigo v Mami Hasegawa | 3-6,4-6 |