Stadium: Court 8 Round: 44 Ground: Hardcourt outdoor
| ITF Indonesia F3 | 2018/08/07 06:40 | Alexander Babanine v Shirafuji, Naru | 6-1,6-2 |
| ITF Indonesia F3 Qual | 2018/08/06 04:30 | Yuttana Charoenphon v Shirafuji, Naru | 6-1,6-7,6-3 |
| ITF Indonesia F3 Qual | 2018/08/05 05:00 | Perez Bacigalupo, Gonzalo Tomas v Shirafuji, Naru | 1-6,1-6 |
| ITF Indonesia F3 Qual | 2018/08/04 04:00 | Anthony Susanto v Shirafuji, Naru | 4-6,2-6 |
| ITF Indonesia F2 Qual | 2018/07/30 04:30 | Shirafuji, Naru v Christian Langmo | 6-2,6-7,3-6 |
| ITF Indonesia F2 Qual | 2018/07/29 04:30 | Shirafuji, Naru v Rishi Reddy | 6-7,6-1,6-1 |
| ITF Indonesia F2 Qual | 2018/07/28 02:00 | Shirafuji, Naru v Reddy, Nikit | 6-3,1-6,6-4 |
| ITF Malaysia F3 | 2018/07/17 03:15 | Shirafuji, Naru v Vuradin, Lucas | 2-6,2-6 |
| ITF Thailand F2 | 2018/08/25 04:00 | Kamchai, Thammarat v Ren Nakamura | 4-6,0-6 |
| ITF Korea F5 | 2018/08/21 01:00 | Ren Nakamura v Ji Hoon Son | 6-4,4-6,3-6 |
| ITF Korea F5 | 2018/08/20 01:00 | Ren Nakamura v Jung, Ki-Su | 6-2,6-0 |
| ITF Korea F5 | 2018/08/18 01:00 | Ren Nakamura v Yang, Mingyuan | 6-1,6-0 |
| ITF Korea F4 | 2018/08/13 03:00 | Ren Nakamura v Lee, Tae-Woo | 1-6,1-6 |
| ITF Austria F5 Qual | 2018/07/29 10:30 | Ren Nakamura v Leuch, Vital Flurin | 6-3,6-7,4-6 |
| ITF Austria F4 Qual | 2018/07/21 10:00 | Kramer, Andreas v Ren Nakamura | 6-3,6-4 |
| ITF Guam F1 | 2018/06/18 02:10 | Ehara, Hiroyasu v Ren Nakamura | 6-4,6-4 |