| WTA New Haven Qual | 08/17 17:55 | 44 | [45] Belinda Bencic v Kurumi Nara [99] | 2-6,6-4,6-3 | |
| WTA Cincinnati Qual | 08/12 00:05 | 44 | [100] Kurumi Nara v Ajla Tomljanovic [60] | 4-6,3-6 | |
| WTA Nanchang | 07/23 10:45 | 25 | [99] Kurumi Nara v Jing-Jing Lu [172] | 6-3,2-6,4-6 | |
| Wimbledon Women | 07/03 15:55 | 23 | [1] Simona Halep v Kurumi Nara [100] | 6-2,6-4 | |
| WTA Eastbourne | 06/25 10:00 | 24 | [44] Kaia Kanepi v Kurumi Nara [101] | 6-2,6-4 | |
| WTA Eastbourne Qual | 06/23 11:20 | 64 | [82] Sachia Vickery v Kurumi Nara [100] | 2-6,4-6 | |
| WTA Eastbourne Qual | 06/22 12:25 | 45 | [332] Kimberly Birrell v Kurumi Nara [100] | 4-6,4-6 | |
| WTA Birmingham Qual | 06/16 13:10 | 45 | [49] Camila Giorgi v Kurumi Nara [97] | 6-4,7-6 | |
| WTA Nottingham | 06/12 17:10 | 25 | [97] Kurumi Nara v Johanna Konta [22] | 2-6,3-6 | |
| French Open Women | 05/27 09:00 | 23 | [94] Kurumi Nara v Barbora Strycova [26] | 6-1,3-6,4-6 | |
| ITF Women Trnava | 05/18 12:00 | 27 | [92] Kurumi Nara v Ekaterina Alexandrova [101] | 6-7,6-7 | |
| ITF Women Trnava | 05/18 08:30 | 26 | [92] Kurumi Nara v Andrea Petkovic [103] | 6-3,6-2 | |
| ITF Women Trnava | 05/14 13:00 | 25 | [92] Kurumi Nara v Tereza Mihalikova [351] | 7-5,6-3 | |
| ITF Women Gifu | 05/06 03:00 | 29 | Kurumi Nara v Moyuka Uchijima | 6-2,7-6 | |
| ITF Women Gifu | 05/05 04:20 | 28 | [103] Kurumi Nara v Nao Hibino [127] | 6-3,6-3 | |
| ITF Women Gifu | 05/04 03:40 | 27 | [103] Kurumi Nara v Harriet Dart [215] | 2-6,6-1,6-2 | |
| ITF Women Gifu | 05/03 04:20 | 26 | [103] Kurumi Nara v Na-Lae Han [271] | 6-2,6-2 | |
| ITF Women Gifu | 05/01 02:40 | 25 | Kurumi Nara v Katy Dunne | 6-2,6-2 | |
| 2018 Fed Cup | 04/22 04:30 | 27 | [100] Kurumi Nara v Heather Watson [77] | 7-6,6-4 | |
| 2018 Fed Cup | 04/21 05:35 | 27 | [100] Kurumi Nara v Johanna Konta [23] | 4-6,2-6 | |
| ITF Women Osaka | 04/13 02:30 | 27 | Kurumi Nara v Rebecca Marino | 3-6,4-6 | |
| ITF Women Osaka | 04/12 03:35 | 26 | [100] Kurumi Nara v Ya-Hsuan Lee [417] | 6-2,6-3 | |
| ITF Women Osaka | 04/10 02:15 | 25 | [100] Kurumi Nara v Jia-Qi Kang [389] | 6-2,5-7,6-1 | |
| ITF Women Kashiwa | 04/03 02:50 | 25 | [100] Kurumi Nara v Ksenia Lykina [318] | 6-3,5-7,5-7 | |
| WTA Miami Qual | 03/19 18:05 | 44 | [95] Kurumi Nara v Vera Lapko [135] | 7-6,4-6,3-6 | |
| WTA Indian Wells | 03/08 00:05 | 23 | Kurumi Nara v Kaia Kanepi | 6-1,4-6,4-6 | |
| WTA Indian Wells Qual | 03/06 20:40 | 45 | Johanna Larsson v Kurumi Nara | 4-6,6-7 | |
| WTA Indian Wells Qual | 03/05 19:00 | 44 | Yafan Wang v Kurumi Nara | 4-6,2-6 | |
| WTA Indian Wells | 02/27 18:00 | 25 | Ying-Ying Duan v Kurumi Nara | 7-6,6-3 | |
| ITF Women Rancho Santa Fe | 02/25 18:00 | 29 | Asia Muhammad v Kurumi Nara | 6-4,2-6,7-6 |