Stadium: Court 4 Round: 25 Ground: Hardcourt outdoor
| Challenger Nonthaburi | 2024/01/10 06:40 | Coleman Wong v Yasutaka Uchiyama | 7-6,1-6,4-6 |
| Challenger Nonthaburi | 2024/01/08 08:20 | Bernard Tomic v Yasutaka Uchiyama | 4-6,6-2,6-7 |
| Challenger Nonthaburi | 2024/01/01 08:45 | Gauthier Onclin v Yasutaka Uchiyama | 7-5,6-2 |
| Challenger Yokohama | 2023/11/24 02:00 | Li Tu v Yasutaka Uchiyama | 6-7,5-7 |
| Challenger Yokohama | 2023/11/22 02:30 | Yasutaka Uchiyama v Seong Chan Hong | 2-6,6-4,6-4 |
| Challenger Yokohama | 2023/11/21 02:30 | Yasutaka Uchiyama v Masamichi Imamura | 6-1,6-1 |
| Challenger Yokohama | 2023/11/20 03:35 | Yasutaka Uchiyama v Yunseong Chung | 6-4,6-7,7-6 |
| Challenger Kobe | 2023/11/15 04:50 | Jurij Rodionov v Yasutaka Uchiyama | 7-6,6-4 |
| 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 |