Stadium: Court 14 Round: 27 Ground: Hardcourt outdoor
| ITF Malaysia F2 | 2018/07/13 03:00 | Ryota Tanuma v Cheong-Eui Kim | 7-6,2-6,6-3 |
| ITF M25 Matsuyama | 2019/04/09 04:10 | Ryota Tanuma v Shuichi Sekiguchi | 4-6,4-6 |
| ITF M15 Kashiwa | 2019/04/01 00:00 | Ryota Tanuma v Seita Watanabe | 3-6,6-1,12-10 |
| ITF M15 Kashiwa | 2019/04/01 00:00 | Ryota Tanuma v Tamaki Yamao | 6-7,4-6 |
| ITF M15 Tsukuba | 2019/03/28 01:00 | Ryota Tanuma v Shintaro Imai | 5-7,3-6 |
| ITF M15 Tsukuba | 2019/03/26 01:00 | Aoran Wang v Ryota Tanuma | 6-7,5-7 |
| ITF M15 Kofu | 2019/03/23 02:55 | Jumpei Yamasaki v Ryota Tanuma | 6-2,6-4 |
| ITF M15 Kofu | 2019/03/22 02:00 | Issei Okamura v Ryota Tanuma | 4-6,2-6 |
| ITF M15 Kofu | 2019/03/21 04:15 | Ryota Tanuma v Kento Takeuchi | 6-4,6-4 |
| ITF M25 Matsuyama | 2019/04/12 02:55 | Rinky Hijikata v Cheong-Eui Kim | 6-3,6-1 |
| ITF M25 Matsuyama | 2019/04/10 07:05 | Sora Fukuda v Cheong-Eui Kim | 6-3,2-6,3-6 |
| ITF M15 Kashiwa | 2019/04/05 01:00 | Cheong-Eui Kim v Jumpei Yamasaki | 4-6,6-3,4-6 |
| ITF M15 Kashiwa | 2019/04/04 01:00 | Cheong-Eui Kim v Mark Whitehouse | 6-2,6-3 |
| ITF M15 Kashiwa | 2019/04/02 04:30 | Cheong-Eui Kim v Yo Han Sung | 6-1,6-0 |
| Challenger Zhangjiagang | 2019/03/18 03:35 | Evgeny Karlovskiy v Cheong-Eui Kim | 6-2,7-5 |
| Challenger Yokohama | 2019/02/27 05:50 | Go Soeda v Cheong-Eui Kim | 6-1,6-4 |
| Challenger Yokohama | 2019/02/26 01:00 | Cheong-Eui Kim v Naoto Kai | 6-1,6-3 |