Stadium: Court 5 Round: 26 Ground: Synthetic outdoor
| Hamamatsu, Singles W-WITF-JPN-12A | 2018/10/16 02:50 | Cheong, Naomi v Kakizawa, Akari | 4-6,7-6,6-4 |
| Makinohara, Singles Qualifying W-WITF-JPN-15A | 2018/10/09 04:40 | Cheong, Naomi v Hiromi Abe | 6-4,1-6,5-7 |
| WTA Chicago | 2018/09/02 19:00 | Elena Rybakina v Cheong, Naomi | 6-0,6-2 |
| ITF Women Darmstadt Qual | 2018/07/16 15:30 | Cheong, Naomi v Koelzer, Romy | 2-6,2-6 |
| ITF Women Darmstadt Qual | 2018/07/15 13:00 | Cheong, Naomi v Stoll, Tatjana | 7-5,6-3 |
| ITF Women Aschaffenburg Qual | 2018/07/02 13:10 | Cheong, Naomi v Halbauer, Elizabeth | 2-6,1-6 |
| ITF Women Gifu Qual | 2018/04/29 02:40 | Akiko Omae v Cheong, Naomi | 6-2,6-4 |
| Quanzhou, Qualifications Simples W-WITF-CHN-04B | 2018/04/21 02:00 | Cheong, Naomi v Sun, Ziyue | 6-7,4-6 |
| Hamamatsu, Singles W-WITF-JPN-12A | 2018/10/17 04:05 | Kanako Morisaki v Imanishi, Miharu | 2-6,2-6 |
| Makinohara, Singles Qualifying W-WITF-JPN-15A | 2018/10/11 00:30 | Susan Bandecchi v Imanishi, Miharu | 6-3,6-4 |
| Makinohara, Singles Qualifying W-WITF-JPN-15A | 2018/10/10 02:25 | Matsumoto, Ari v Imanishi, Miharu | 4-6,2-6 |
| Obidos, Singles W-WITF-POR-12A | 2018/10/02 11:30 | Imanishi, Miharu v Sanesi, Gaia | 5-7,6-7 |
| Obidos, Singles W-WITF-POR-12A | 2018/09/26 10:00 | Imanishi, Miharu v Urszula Radwanska | 4-6,2-6 |
| WTA Tokyo | 2018/09/15 10:45 | Dabrowski, Gabriela v Imanishi, Miharu | 6-3,6-2 |
| Hiroshima, Japon | 2018/09/09 07:40 | Urszula Radwanska v Imanishi, Miharu | 7-6,6-1 |
| ITF Women Nanao | 2018/08/30 03:00 | Mai Hontama v Imanishi, Miharu | 7-6,5-7,6-2 |