Stadium: Court 4 Round: 45 Ground: Hardcourt outdoor
| ITF - M25 Sapporo | 2022/09/07 00:30 | Takuya Kumasaka v Naoki Tajima | 7-6,6-0 |
| ITF - M15 Yanagawa | 2023/12/29 00:50 | Jumpei Yamasaki v Takuya Kumasaka | 6-1,6-4 |
| ITF - M15 Yanagawa | 2023/12/27 00:30 | Takuya Kumasaka v Kazuma Kawachi | 6-4,6-2 |
| ITF - M15 Yanagawa | 2023/12/22 02:45 | Takuya Kumasaka v Taisei Ichikawa | 4-6,4-6 |
| ITF - M15 Yanagawa | 2023/12/21 02:50 | Takuya Kumasaka v Yuta Tomida | 7-6,6-0 |
| ITF - M15 Ipoh Perak | 2023/11/26 01:30 | Alexey Zakharov v Takuya Kumasaka | 6-0,6-3 |
| ITF - M15 Ipoh Perak | 2023/11/25 01:20 | Takuya Kumasaka v Jeamoon Lee | 7-6,6-0 |
| ITF - M15 Ipoh Perak | 2023/11/24 02:00 | Takuya Kumasaka v Hayato Matsuoka | 7-6,6-0 |
| ITF - M15 Ipoh Perak | 2023/11/23 04:55 | Hikaru Shiraishi v Takuya Kumasaka | 6-7,4-6 |
| ITF M25 - Doha | 2024/01/18 12:00 | Naoki Tajima v Sandro Kopp | 3-6,1-6 |
| ITF M25 - Doha | 2024/01/17 12:30 | Stefan Palosi v Naoki Tajima | 4-6,7-5,3-6 |
| ITF M25 - Doha | 2024/01/16 12:00 | Mashari Nawaf v Naoki Tajima | 1-6,1-6 |
| ITF M25 - Doha | 2024/01/15 12:00 | Naoki Tajima v Andrei Cuceu | 6-2,6-1 |
| ITF M25 - Doha | 2024/01/14 16:00 | Naoki Tajima v Nikita Bortnichek | 6-1,6-0 |
| ITF - M15 Doha | 2024/01/11 12:00 | Viacheslav Bielinskyi v Naoki Tajima | 4-6,6-4,6-1 |
| ITF - M15 Doha | 2024/01/09 12:00 | Naoki Tajima v Matteo Covato | 6-4,6-1 |
| ITF - M15 Doha | 2024/01/08 13:45 | Naoki Tajima v Andrei Cuceu | 6-1,6-2 |