Stadium: Court 9 Round: 62
| 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 |
| 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 Korea F5 | 2018/08/18 01:00 | Hyeon il Jung v Geun Jun Kim | 7-6,1-6,4-6 |
| ITF Korea F4 | 2018/08/15 01:00 | Ju-Hae Moon v Geun Jun Kim | 6-2,6-3 |
| ITF Korea F4 | 2018/08/14 01:00 | Ki Su Jung v Geun Jun Kim | 2-6,1-6 |
| ITF Korea F3 | 2018/06/19 09:45 | Geun Jun Kim v Chukang Wang | 4-6,1-6 |
| ITF Korea F3 Qual | 2018/06/18 01:00 | Young-Hoon Jeong v Geun Jun Kim | 4-6,4-6 |
| ITF Korea F3 Qual | 2018/06/17 03:00 | Geun Jun Kim v Dae-Hee Lee | 7-5,7-5 |
| ITF Korea F3 Qual | 2018/06/16 03:30 | Jaeyoung Park v Geun Jun Kim | 1-6,0-6 |
| ITF Korea F2 | 2018/06/09 01:00 | Minjong Park v Geun Jun Kim | 6-1,6-4 |