Stadium: COURT F Round: 54 Ground: Synthetic outdoor
| ITF Women Kyoto | 2018/09/04 02:40 | Mami Hasegawa v Χιμένο Σακατσούμε | 3-6,4-6 |
| ITF Women Daegu Qual | 2018/06/18 01:00 | Mami Hasegawa v Se-Hyun Kim | 1-6,1-6 |
| ITF Women Daegu Qual | 2018/06/17 02:00 | Γιουν Σε Γιανγκ v Mami Hasegawa | 2-6,3-6 |
| ITF Women Gyeongsan Qual | 2018/06/12 01:00 | Γέονγκ Βον Τζέονγκ v Mami Hasegawa | 6-4,7-6 |
| ITF Women Gyeongsan Qual | 2018/06/11 02:00 | Nagisa Morimoto v Mami Hasegawa | 6-4,2-6,2-6 |
| ITF Women Sangju Qual | 2018/06/04 05:00 | Mami Hasegawa v Jin Ju Lee | 4-6,4-6 |
| ITF Women Gifu Qual | 2018/04/29 01:00 | Satsuki Koike v Mami Hasegawa | 6-1,6-0 |
| ITF Women Osaka Qual | 2018/04/08 03:30 | Mami Hasegawa v Nicha Lertpitaksinchai | 6-2,6-7,4-6 |
| ITF Women Kyoto | 2018/09/06 01:00 | Χαρούνα Αρακάβα v Μιτσούμι Καβασάκι | 6-0,6-3 |
| ITF Women Kyoto | 2018/09/05 07:20 | Μιτσούμι Καβασάκι v Nagisa Morimoto | 6-4,6-3 |
| ITF Women Kyoto | 2018/09/05 01:00 | Κανάκο Οσαφούνε v Μιτσούμι Καβασάκι | 4-6,6-7 |
| ITF Women Tsukuba | 2018/08/19 00:30 | Νάγκι Χανατάνι v Μιτσούμι Καβασάκι | 6-3,6-3 |
| ITF Women Nonthaburi | 2018/08/05 02:00 | Ντάμπιν Κιμ v Μιτσούμι Καβασάκι | 7-6,6-3 |
| ITF Women Nonthaburi | 2018/08/04 02:00 | Μιτσούμι Καβασάκι v Λίσα-Μαρί Ρίουξ | 7-5,6-4 |
| ITF Women Taipei | 2018/07/25 05:30 | Κβαν Γιάου Νγκ v Μιτσούμι Καβασάκι | 6-4,6-4 |
| ITF Women Hong Kong | 2018/07/09 05:55 | Reina Takahashi v Μιτσούμι Καβασάκι | 6-0,7-5 |