Round: 62 Ground: Synthetic outdoor
| Kofu, Singles Qualifying W-WITF-JPN-02A | 2018/06/10 01:30 | Haraguchi, Sae v Berezov, Anastasia | 4-6,1-6 |
| Kofu, Singles Qualifying W-WITF-JPN-02A | 2018/03/24 00:30 | 장, 잉 v Haraguchi, Sae | 6-1,6-2 |
| Nishi-Tama, Singles W-WITF-JPN-01A | 2018/03/17 04:00 | 타카하타, 코토미 v Haraguchi, Sae | 6-1,6-1 |
| Hamamatsu, Singles Qualifying W-C25-JPN-06A | 2017/10/17 06:00 | Haraguchi, Sae v 야마구치, 메이 | 1-6,0-6 |
| Hamamatsu, Singles Qualifying W-C25-JPN-06A | 2017/10/14 01:00 | Ozeki, Ayaka v Haraguchi, Sae | 2-6,6-4,3-6 |
| Kofu, Singles Qualifying W-WITF-JPN-02A | 2017/06/12 03:20 | Haet, Michaela v Haraguchi, Sae | 6-1,6-3 |
| Kofu, Singles Qualifying W-WITF-JPN-02A | 2017/06/11 01:00 | Haraguchi, Sae v 히사마츠, 시호 | 6-1,3-6,6-0 |
| Kofu, Singles Qualifying W-WITF-JPN-02A | 2017/03/25 03:30 | Haraguchi, Sae v 오제키, 미치카 | 1-6,4-6 |
| Makinohara, Singles Qualifying W-WITF-JPN-15A | 2018/10/07 03:00 | 미야모토, 아유미 v 아이카와, 마유카 | 6-4,6-0 |
| ITF Women Kyoto | 2018/09/05 03:30 | 나가타, 안리 v 아이카와, 마유카 | 6-3,6-4 |
| ITF Women Kyoto | 2018/09/02 03:00 | Nakashima, Miyu v 아이카와, 마유카 | 4-6,4-6 |
| ITF Women Nanao | 2018/08/27 04:45 | 아이카와, 마유카 v So, Kumi | 2-6,4-6 |
| ITF Women Nanao | 2018/08/26 04:15 | 포포비치, 이바나 v 아이카와, 마유카 | 4-6,4-6 |
| ITF Women Nanao | 2018/08/26 01:00 | 아이카와, 마유카 v Shimizu, Chinatsu | 6-3,6-3 |
| ITF Women Evansville | 2018/07/25 17:25 | Ly-Nguyen, Savanna v 아이카와, 마유카 | 6-4,6-1 |
| ITF Women Evansville | 2018/07/24 14:00 | 베르날드, 카이틀린 v 아이카와, 마유카 | 5-7,5-7 |