Stadium: Court 6 Round: 44 Ground: Hardcourt outdoor
| ITF Japan F3 | 2018/03/17 00:30 | Tomohiro Masabayashi v Kawakami, Rimpei | 2-6,4-6 |
| ITF Japan F2 | 2018/03/13 00:30 | Issei Okamura v Kawakami, Rimpei | 6-2,6-4 |
| ITF Turkey F4 | 2018/01/29 08:00 | Melnic, Vladislav v Kawakami, Rimpei | 7-5,6-3 |
| ITF Turkey F3 | 2018/01/23 11:30 | Zgombic, Fran Zvonimir v Kawakami, Rimpei | 6-4,6-1 |
| ITF Turkey F3 | 2018/01/22 10:00 | Kawakami, Rimpei v Alekseenko, Vadim | 6-2,6-1 |
| ITF Turkey F3 | 2018/01/20 07:00 | Solomatin, Igor v Kawakami, Rimpei | 0-6,1-6 |
| ITF Turkey F2 | 2018/01/15 07:00 | Kawakami, Rimpei v Manda, Calin | 6-7,6-2,1-6 |
| ITF Turkey F1 | 2018/01/07 10:00 | Matteo Martineau v Kawakami, Rimpei | 6-1,6-1 |
| ITF Japan F2 | 2018/03/12 00:30 | Jumpei Yamasaki v Shirafuji, Naru | 6-0,6-0 |
| ITF Japan F1 | 2018/03/07 03:15 | Yuki Mochizuki v Shirafuji, Naru | 6-4,6-3 |
| ITF Japan F1 | 2018/03/06 01:00 | Shirafuji, Naru v Osafune, Masaki | 6-0,6-3 |
| ITF Japan F1 | 2018/03/04 01:00 | Shirafuji, Naru v Azuma, Ryuhei | 6-2,6-2 |
| ITF Japan F1 | 2018/03/03 03:00 | Shirafuji, Naru v Shimizu, Keigo | 6-2,6-1 |
| Challenger Kyoto Qual | 2018/02/17 04:45 | Ehara, Hiroyasu v Shirafuji, Naru | 7-5,6-2 |
| ITF Egypt F4 | 2018/02/05 09:00 | Shirafuji, Naru v Stouff, Vincent | 0-6,2-6 |
| ITF Egypt F4 | 2018/02/04 15:00 | Shirafuji, Naru v Mohanty, Arsav | 6-2,6-3 |