Stadium: Court 7 Round: 25 Ground: Hardcourt outdoor
| Challenger Gwangju | 2019/05/16 05:45 | Yunseong Chung v Evgeny Donskoy | 5-7,4-6 |
| Challenger Gwangju | 2019/05/15 03:40 | Duckhee Lee v Yunseong Chung | 4-6,2-6 |
| Challenger Gwangju | 2019/05/14 05:00 | Jeamoon Lee v Yunseong Chung | 6-7,2-6 |
| Challenger Busan | 2019/05/10 07:05 | Ricardas Berankis v Yunseong Chung | 5-7,6-3,6-4 |
| Challenger Busan | 2019/05/09 06:45 | Yunseong Chung v Marcos Baghdatis | 6-2,6-3 |
| Challenger Busan | 2019/05/07 04:05 | Nikola Milojevic v Yunseong Chung | 2-6,6-3,5-7 |
| Challenger Busan | 2019/05/06 04:10 | Yunseong Chung v Zhe Li | 3-6,6-3,6-4 |
| Challenger Seoul | 2019/05/02 04:00 | Yasutaka Uchiyama v Yunseong Chung | 6-4,6-4 |
| Challenger Puerto Vallarta | 2019/05/01 18:35 | Alafia Ayeni v Yusuke Takahashi | 4-6,6-4,3-6 |
| ITF M25 Calabasas | 2019/03/20 21:35 | Alafia Ayeni v Isaiah Strode | 6-4,4-6,4-6 |
| Challenger Newport Beach | 2019/01/23 21:25 | Dustin Brown v Alafia Ayeni | 6-7,6-3,6-3 |
| Challenger Newport Beach | 2019/01/21 19:45 | Evan Song v Alafia Ayeni | 6-7,6-3,6-4 |
| Challenger Da Nang | 2019/01/08 07:45 | Alafia Ayeni v Carlos Boluda-Purkiss | 1-6,7-6,0-6 |
| Challenger Da Nang | 2019/01/07 04:25 | Sonchat Ratiwatana v Alafia Ayeni | 4-6,6-7 |
| Challenger Da Nang | 2019/01/06 03:30 | Alafia Ayeni v Kaito Uesugi | 6-7,6-2,3-6 |
| Challenger Champaign | 2018/11/14 16:00 | Alafia Ayeni v Sekou Bangoura | 7-6,2-6,3-6 |