Stadium: Court 9 Round: 62
| 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 |
| ITF Tunisia F21 | 2018/05/26 10:00 | Ren Nakamura v Modica, Sacha | 3-6,2-6 |
| ITF Tunisia F20 | 2018/05/23 11:55 | Ren Nakamura v Gueydan, Quentin | 3-6,0-6 |
| ITF Tunisia F20 | 2018/05/20 09:00 | Vejnovic, Marko v Ren Nakamura | 3-6,5-7 |
| ITF Korea F5 | 2018/08/18 01:00 | Jung, Hyeon IL v Kim, Geun Jun | 7-6,1-6,4-6 |
| ITF Korea F4 | 2018/08/15 01:00 | Moon, Ju-Hae v Kim, Geun Jun | 6-2,6-3 |
| ITF Korea F4 | 2018/08/14 01:00 | Jung, Ki-Su v Kim, Geun Jun | 2-6,1-6 |
| ITF Korea F3 | 2018/06/19 09:45 | Kim, Geun Jun v Wang, Chukang | 4-6,1-6 |
| Korea F3, Singles Qualifying | 2018/06/18 01:00 | Jeong, Young-Hoon v Kim, Geun Jun | 4-6,4-6 |
| Korea F3, Singles Qualifying | 2018/06/17 03:00 | Kim, Geun Jun v Lee, Dae-Hee | 7-5,7-5 |
| Korea F3, Singles Qualifying | 2018/06/16 03:30 | Park, Jaeyoung v Kim, Geun Jun | 1-6,0-6 |
| ITF Korea F2 | 2018/06/09 01:00 | Park, Minjong v Kim, Geun Jun | 6-1,6-4 |