Stadium: Court 13 Round: 27
| Challenger Seoul Qual | 2018/04/29 02:00 | Jung-Woong Na v Makoto Ochi | 2-6,4-6 |
| ITF Korea F1 | 2018/06/06 01:00 | Jung-Woong Na v Ji Hoon Son | 6-4,6-7,6-4 |
| Challenger Busan | 2018/05/15 05:50 | Max Purcell v Jung-Woong Na | 6-4,6-1 |
| Challenger Gimcheon Qual | 2018/05/05 05:20 | Jacob Grills v Jung-Woong Na | 5-7,6-4,6-3 |
| Challenger Seoul Qual | 2018/04/29 02:00 | Jung-Woong Na v Makoto Ochi | 2-6,4-6 |
| Challenger Seoul Qual | 2018/04/28 03:05 | Jung-Woong Na v Tae-Woo Lee | 6-1,6-3 |
| ITF Turkey F5 | 2018/02/08 07:30 | Jung-Woong Na v Nino Serdarusic | 1-6,2-6 |
| ITF Turkey F5 | 2018/02/06 07:30 | Razvan M Codescu v Jung-Woong Na | 3-6,0-6 |
| ITF Turkey F5 | 2018/02/05 07:30 | Jung-Woong Na v Luka Miklavcic | 6-4,6-0 |
| ITF Hong Kong F1 | 2018/06/25 03:55 | Kazuki Nishiwaki v Makoto Ochi | 7-6,6-2 |
| ITF Japan F8 | 2018/06/12 02:55 | Ryotaro Matsumura v Makoto Ochi | 4-6,6-3,6-1 |
| ITF Japan F7 | 2018/06/09 01:00 | Rio Noguchi v Makoto Ochi | 2-6,6-2,6-4 |
| ITF Japan F7 | 2018/06/08 02:25 | Haru Inoue v Makoto Ochi | 2-6,5-7 |
| ITF Japan F7 | 2018/06/07 05:25 | Tomohiro Masabayashi v Makoto Ochi | 2-6,2-6 |
| ITF Japan F7 | 2018/06/04 02:30 | Shunrou Takeshima v Makoto Ochi | 4-6,3-6 |
| ITF Singapore F3 | 2018/05/31 06:15 | Nicholas S. Hu v Makoto Ochi | 6-4,6-7,6-1 |
| ITF Singapore F3 | 2018/05/30 03:30 | Michael Look v Makoto Ochi | 3-6,1-6 |