Stadium: Court 8 Round: 25
| 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 |
| ITF Tunisia F21 | 2018/05/26 10:00 | Ren Nakamura v Sacha Modica | 3-6,2-6 |
| ITF Tunisia F20 | 2018/05/23 11:55 | Ren Nakamura v Quentin Gueydan | 3-6,0-6 |
| ITF Tunisia F20 | 2018/05/20 09:00 | Marko Vejnovic v Ren Nakamura | 3-6,5-7 |
| ITF Tunisia F20 | 2018/05/19 09:00 | Connor Johnson v Ren Nakamura | 1-6,3-6 |
| ITF Tunisia F19 | 2018/05/17 09:00 | Vasko Mladenov v Ren Nakamura | 6-4,6-2 |
| ITF Korea F3 | 2018/06/18 06:30 | Tae-Woo Lee v Young Seok Kim | 1-6,7-6,4-6 |
| ITF Korea F2 | 2018/06/12 01:00 | Tae-Woo Lee v Jumpei Yamasaki | 3-6,0-6 |
| ITF Korea F1 | 2018/06/08 03:40 | Cheong-Eui Kim v Tae-Woo Lee | 6-4,5-7,6-4 |
| ITF Korea F1 | 2018/06/07 01:00 | Chan-Yeong Oh v Tae-Woo Lee | 4-6,2-6 |
| ITF Korea F1 | 2018/06/06 05:05 | Clement Larriere v Tae-Woo Lee | 4-6,4-6 |
| ITF Korea F1 | 2018/06/04 01:00 | Tae-Woo Lee v Jun Su Kim | 6-3,6-0 |
| ITF Korea F1 | 2018/06/03 01:00 | Tae-Woo Lee v Seong Woon Yu | 6-1,2-6,6-1 |
| Challenger Busan Qual | 2018/05/13 02:00 | Rubin Statham v Tae-Woo Lee | 7-6,6-3 |