Stadium: Court 6 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Kashiwa | 2019/04/03 06:15 | Jumpei Yamasaki v Ji Sung Nam | 6-3,2-6,7-6 |
| ITF M15 Nishi-Tokyo | 2019/03/15 02:20 | Hiroyasu Ehara v Ji Sung Nam | 6-3,3-6,7-6 |
| ITF M15 Nishi-Tokyo | 2019/03/14 01:00 | Min-Kyu Song v Ji Sung Nam | 4-6,3-6 |
| ITF M15 Nishi-Tokyo | 2019/03/13 03:50 | Yunosuke Tanaka v Ji Sung Nam | 6-4,1-6,5-7 |
| ITF M15 Nishi-Tama | 2019/03/10 01:00 | Shintaro Imai v Ji Sung Nam | 6-2,6-2 |
| ITF M15 Nishi-Tama | 2019/03/09 01:00 | Jumpei Yamasaki v Ji Sung Nam | 2-6,1-6 |
| ITF M15 Nishi-Tama | 2019/03/08 06:25 | Hiroyasu Ehara v Ji Sung Nam | 4-6,2-6 |
| ITF M15 Nishi-Tama | 2019/03/06 04:00 | Takuto Niki v Ji Sung Nam | 4-6,2-6 |
| ITF M15 Kashiwa | 2019/04/04 01:00 | Cheong-Eui Kim v Mark Whitehouse | 6-2,6-3 |
| ITF M15 Kashiwa | 2019/04/03 04:50 | Masamichi Imamura v Mark Whitehouse | 3-6,4-6 |
| ITF M15 Kashiwa | 2019/04/01 06:00 | Mark Whitehouse v Kento Takeuchi | 3-6,6-4,11-9 |
| ITF M15 Kashiwa | 2019/04/01 00:00 | Mark Whitehouse v Daniil Zarichanskiy | 6-1,6-0 |
| ITF M15 Tsukuba | 2019/03/28 03:00 | Mark Whitehouse v Naoki Tajima | 4-6,6-4,3-6 |
| ITF M15 Tsukuba | 2019/03/26 01:00 | Pol Wattanakul v Mark Whitehouse | 2-6,0-6 |
| ITF M25 Glasgow | 2019/02/18 09:30 | Matteo Martineau v Mark Whitehouse | 6-2,6-0 |
| ITF M25 Barnstaple | 2019/02/12 14:25 | Mark Whitehouse v Hugo Grenier | 4-6,2-6 |