Stadium: C Round: 28
| ITF Thailand F9 | 2015/04/27 03:00 | Kikuchi, Gengo v Nam, Ji Sung | 6-4,6-7,6-3 |
| ITF Vietnam F2 | 2018/05/11 03:00 | Kikuchi, Gengo v Tanuma, Ryota | 6-4,6-2 |
| ITF Vietnam F2 | 2018/05/08 03:00 | Kikuchi, Gengo v Yeung, Pak Long | 4-6,7-5,6-2 |
| ITF Vietnam F2 | 2018/05/06 04:00 | Kikuchi, Gengo v Niki Kaliyanda Poonacha | 6-1,6-1 |
| ITF Vietnam F2 | 2018/05/05 03:00 | Kikuchi, Gengo v Yuichiro Inui | 6-4,6-4 |
| ITF Vietnam F1 | 2018/04/30 03:00 | Kikuchi, Gengo v Chun Hsin Tseng | 2-6,7-6,4-6 |
| ITF Japan F5 | 2018/04/01 00:30 | Kikuchi, Gengo v Liu, Shao-Fan | 6-2,6-7,3-6 |
| ITF Japan F5 | 2018/03/31 00:30 | Kikuchi, Gengo v Daisuke Sumizawa | 6-1,6-3 |
| ITF Japan F3 | 2018/03/20 06:00 | Tung-Lin Wu v Kikuchi, Gengo | 6-2,6-3 |
| ITF Vietnam F2 | 2018/05/11 03:00 | Kelsey Stevenson v Nam, Ji Sung | 6-4,2-6,1-6 |
| ITF Vietnam F2 | 2018/05/09 05:50 | Nguyen, Phuong van v Nam, Ji Sung | 4-6,2-6 |
| ITF Vietnam F2 | 2018/05/07 05:45 | Nam, Ji Sung v Singh, Karunuday | 6-4,6-3 |
| ITF Vietnam F2 | 2018/05/06 04:00 | Nam, Ji Sung v Skadarka, Stefan | 6-0,6-4 |
| ITF Vietnam F2 | 2018/05/05 07:00 | Nam, Ji Sung v Kerdlaphee, Phongsapak | 6-2,6-1 |
| Challenger Seoul Qual | 2018/04/30 03:00 | Yosuke Watanuki v Nam, Ji Sung | 7-5,6-2 |
| Challenger Seoul Qual | 2018/04/29 03:35 | Nam, Ji Sung v Blake Ellis | 6-3,6-3 |
| Challenger Seoul Qual | 2018/04/28 01:30 | Yoo, Daniel v Nam, Ji Sung | 2-6,2-6 |