stadio: Court 6 Round: 54 Ground: Hardcourt outdoor
| ITF M15 Hua Hin | 2019/08/21 03:00 | Ko Suzuki v Soichiro Moritani | 4-6,4-6 |
| ITF M15 Akishima | 2019/06/12 02:30 | Rio Noguchi v Ko Suzuki | 6-3,1-6,6-3 |
| ITF M15 Akishima | 2019/06/11 03:00 | Ko Suzuki v Kazuki Shimizu | 7-5,6-3 |
| ITF M15 Akishima | 2019/06/11 00:00 | Masayoshi Ono v Ko Suzuki | 2-6,3-6 |
| ITF M15 Guam | 2019/06/08 00:00 | Ko Suzuki v Hiroyasu Ehara | 4-6,1-6 |
| ITF M15 Guam | 2019/06/07 00:00 | Soichiro Moritani v Ko Suzuki | 3-6,4-6 |
| ITF M15 Guam | 2019/06/06 01:20 | Ko Suzuki v Karunuday Singh | 3-6,7-6,6-3 |
| ITF M15 Guam | 2019/06/05 02:40 | Ko Suzuki v Joseph W. Van Meter | 6-2,6-4 |
| ITF M15 Hua Hin | 2019/08/23 06:20 | Ryan Peniston v Young-Hoon Jeong | 6-4,7-5 |
| ITF M15 Hua Hin | 2019/08/22 03:00 | Young-Hoon Jeong v Wishaya Trongcharoenchaikul | 7-6,6-3 |
| ITF M15 Hua Hin | 2019/08/21 04:25 | Yuttana Charoenphon v Young-Hoon Jeong | 1-6,7-6,1-6 |
| ITF M15 Hua Hin | 2019/08/20 04:50 | Young-Hoon Jeong v Jirat Navasirisomboon | 7-6,0-6,10-7 |
| ITF M15 Hua Hin | 2019/08/19 03:00 | Nitin Kumar Sinha v Young-Hoon Jeong | 2-6,4-6 |
| ITF M15 Anseong | 2019/06/27 03:20 | Jean Thirouin v Young-Hoon Jeong | 7-6,7-5 |
| ITF M15 Anseong | 2019/06/26 03:00 | Seung-Hun Shin v Young-Hoon Jeong | 2-6,1-6 |
| ITF M15 Anseong | 2019/06/25 01:00 | Young Seok Kim v Young-Hoon Jeong | 6-7,2-6 |