Stadium: Court 5 Round: 54 Ground: Hardcourt outdoor
| ITF M15 Daegu | 2019/06/03 05:00 | Seita Watanabe v Dae-Hee Lee | 6-2,6-0 |
| ITF M15 Tabarka | 2019/05/16 10:30 | Manuel Guinard v Seita Watanabe | 6-3,6-1 |
| ITF M15 Tabarka | 2019/05/15 08:00 | Seita Watanabe v Roman Blokhin | 6-1,6-0 |
| ITF M15 Tabarka | 2019/05/14 08:00 | Lluis Dolz v Seita Watanabe | 0-6,1-6 |
| ITF M15 Tabarka | 2019/05/07 10:35 | Anis Ghorbel v Seita Watanabe | 6-0,6-4 |
| ITF M15 Tabarka | 2019/05/01 08:30 | Seita Watanabe v Anas Fattar | 4-6,6-7 |
| ITF M15 Tabarka | 2019/04/29 13:30 | Gregorio Cordonnier v Seita Watanabe | 4-6,6-7 |
| ITF M15 Tabarka | 2019/04/29 08:00 | Pierre Gimla v Seita Watanabe | 0-6,0-6 |
| ITF M15 Daegu | 2019/06/03 04:50 | Ho-Min Kang v Seung-Hun Shin | 3-6,6-4,6-10 |
| ITF Thailand F5 | 2018/10/01 02:30 | David Agung Susanto v Seung-Hun Shin | 6-2,6-4 |
| ITF Thailand F5 | 2018/09/30 02:30 | Seung-Hun Shin v Natthasith Kunsuwan | 7-6,6-1 |
| ITF Thailand F5 | 2018/09/29 02:30 | Pasawee Reansuwong v Seung-Hun Shin | 2-6,1-6 |
| ITF Thailand F4 | 2018/09/24 02:30 | Palaphoom Kovapitukted v Seung-Hun Shin | 6-3,6-4 |
| ITF Thailand F4 | 2018/09/23 04:00 | Seung-Hun Shin v Chanchai Sookton-Eng | 6-3,6-3 |
| ITF Korea F4 | 2018/08/11 01:00 | Dukyoung Kim v Seung-Hun Shin | 3-6,3-6 |
| ITF Korea F3 | 2018/06/19 08:10 | Seung-Hun Shin v Jumpei Yamasaki | 6-4,2-6,1-6 |