Stadium: Court 2 Round: 25 Ground: Hardcourt outdoor
| ITF Japan F4 | 2018/03/29 04:15 | Naoki Tajima v Shintaro Imai | 4-6,3-6 |
| Nishi-Tama, Simples M-ITF-JPN-01A | 2019/03/10 01:00 | Shintaro Imai v Nam, Ji Sung | 6-2,6-2 |
| Nishi-Tama, Simples M-ITF-JPN-01A | 2019/03/09 01:00 | Shintaro Imai v Sho Shimabukuro | 6-4,6-3 |
| Nishi-Tama, Simples M-ITF-JPN-01A | 2019/03/08 04:10 | Shintaro Imai v Tomohiro Masabayashi | 6-3,6-2 |
| Nishi-Tama, Simples M-ITF-JPN-01A | 2019/03/07 04:00 | Shintaro Imai v Katayama, Sho | 6-2,6-3 |
| Nishi-Tama, Simples M-ITF-JPN-01A | 2019/03/05 03:30 | Yusuke Takahashi v Shintaro Imai | 1-6,7-5,3-6 |
| Challenger Yokohama | 2019/02/26 01:00 | Shintaro Imai v Perez Sanz, David | 2-6,3-6 |
| Challenger Yokohama | 2019/02/25 01:00 | Kim, Cheong-Eui v Shintaro Imai | 6-1,7-5 |
| ITF - M15 Sharm El Sheikh | 2019/02/02 08:00 | Karim-Mohamed Maamoun v Shintaro Imai | 6-3,6-2 |
| Nishi-Tama, Simples M-ITF-JPN-01A | 2019/03/08 04:30 | Sho Shimabukuro v Naoki Tajima | 6-3,7-5 |
| Nishi-Tama, Simples M-ITF-JPN-01A | 2019/03/05 05:25 | Naoki Tajima v Shinji Hazawa | 7-5,6-3 |
| ITF M15 Anning | 2019/01/18 03:00 | Yan Bai v Naoki Tajima | 3-6,6-1,6-0 |
| ITF M15 Anning | 2019/01/17 03:00 | Naoki Tajima v Michael Zhu | 6-2,6-3 |
| ITF M15 Anning | 2019/01/15 02:00 | Naoki Tajima v Chen, Liran | 6-2,6-1 |
| ITF M15 Anning | 2019/01/13 03:00 | Naoki Tajima v Velotti, Agustin | 6-4,3-6,5-7 |
| ITF M15 Anning | 2019/01/12 03:00 | Naoki Tajima v Liu, Shao-Fan | 2-6,6-1,6-3 |
| ITF M15 Anning | 2019/01/11 03:00 | Naoki Tajima v Prashanth, N. Vijay Sundar | 6-3,6-2 |