Stadium: Court 2 Round: 25 Ground: Hardcourt outdoor
| ITF China F6 | 2015/05/27 02:00 | Young Seok Kim v Yan Bai | 3-6,1-6 |
| Challenger Gwangju Qual | 2017/09/16 03:20 | Young Seok Kim v Marinko Matosevic | 5-7,1-6 |
| ITF Korea F5 | 2017/07/02 04:00 | Young Seok Kim v Tae-Woo Lee | 5-7,6-4,6-1 |
| ITF Korea F5 | 2017/06/30 02:00 | Seong Chan Hong v Young Seok Kim | 6-7,4-6 |
| ITF Korea F5 | 2017/06/29 03:30 | Young Seok Kim v Min-Kyu Song | 6-3,6-2 |
| ITF Korea F5 | 2017/06/28 01:00 | Young Seok Kim v Shane Vinsant | 6-4,7-5 |
| ITF Korea F4 | 2017/06/24 03:35 | Young Seok Kim v Cheong-Eui Kim | 4-6,3-6 |
| ITF Korea F4 | 2017/06/23 02:00 | Jeamoon Lee v Young Seok Kim | 6-3,6-7,3-6 |
| ITF Korea F4 | 2017/06/21 02:00 | Woo-Ram Kim v Young Seok Kim | 3-6,3-6 |
| Challenger Hua Hin Qual | 2017/11/18 08:00 | Yan Bai v Vasko Mladenov | 2-6,6-4,3-6 |
| Challenger Toyota Qual | 2017/11/11 04:00 | Yan Bai v Kaito Uesugi | 5-7,6-7 |
| Challenger Kobe Qual | 2017/11/05 02:00 | Renta Tokuda v Yan Bai | 4-6,6-4,6-3 |
| Challenger Kobe Qual | 2017/11/04 03:35 | Yan Bai v Kento Takeuchi | 5-7,7-6,6-4 |
| Challenger Shenzhen 2 Qual | 2017/10/29 03:45 | Miliaan Niesten v Yan Bai | 6-3,6-2 |
| Challenger Suzhou | 2017/10/23 04:00 | Di Wu v Yan Bai | 6-1,6-2 |
| Challenger Suzhou Qual | 2017/10/22 04:00 | Yan Bai v Rigele Te | 6-1,4-6,0-6 |
| ATP Shanghai Qual | 2017/10/07 04:00 | Yan Bai v Jordan Thompson | 3-6,1-6 |