Stadium: Court 4 Round: 26 Ground: Clay
| Gimcheon, Singles M-ITF-KOR-03A | 2019/06/20 04:05 | Seon Yong Han v Niki, Takuto | 4-6,2-6 |
| ITF M15 Anseong | 2022/08/17 04:20 | Seon Yong Han v Woohyuk Sim | 6-3,6-3 |
| ITF M15 Anseong | 2022/08/15 05:25 | Matsushita, Ryoma v Seon Yong Han | 3-6,4-6 |
| ITF M15 Anseong | 2022/08/15 00:30 | Yeongseok Jeong v Seon Yong Han | 7-6,0-6,10-12 |
| ITF M15 Changwon | 2019/10/15 04:50 | Seon Yong Han v Park, Uisung | 6-7,2-6 |
| Hua Hin, Singles M-ITF-THA-07A | 2019/09/04 06:55 | Boyer, Dusty H v Seon Yong Han | 7-6,6-4 |
| Hua Hin, Singles M-ITF-THA-07A | 2019/08/28 03:00 | Seon Yong Han v Ehara, Hiroyasu | 1-6,5-7 |
| Jakarta, Singles Main, M-ITF-INA-02A | 2019/08/13 05:55 | Takeuchi, Kento (1987) v Seon Yong Han | 6-1,6-2 |
| ITF M15 Anseong | 2019/06/26 02:20 | Lee, Tae-Woo v Seon Yong Han | 7-6,5-7,6-4 |
| ITF M15 Anseong | 2022/08/17 02:10 | Jangjun Kim v Niki, Takuto | 5-7,2-6 |
| ITF M15 Caloundra | 2022/07/28 03:15 | Becroft, Isaac v Niki, Takuto | 6-7,6-2,6-2 |
| ITF M15 Caloundra | 2022/07/27 01:15 | Wishaya Trongcharoenchaikul v Niki, Takuto | 4-6,1-6 |
| ITF M15 Caloundra | 2022/07/24 00:00 | Dane Sweeny v Niki, Takuto | 6-1,6-3 |
| ITF M15 Caloundra | 2022/07/23 05:00 | Niki, Takuto v Addison, Aaron | 6-0,6-4 |
| ITF M15 Caloundra | 2022/07/23 01:15 | Niki, Takuto v Sookton-Eng, Chanchai | 2-6,6-2,6-1 |
| UTR Pro Tennis Series Miki | 2022/07/10 02:00 | Niki, Takuto v Yamato Sueoka | 2-6,5-7 |
| UTR Pro Tennis Series Miki | 2022/07/09 02:00 | Niki, Takuto v Ryuya Ata | 6-3,6-4 |