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