Stadium: Court 9 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Caloundra | 2023/07/25 00:00 | Naoki Tajima v Jesse Delaney | 6-2,6-2 |
| ITF M15 Caloundra | 2023/07/24 04:00 | Naoki Tajima v Thomas Nicholas Gadecki | 6-2,6-2 |
| ITF M25 Anseong | 2023/06/21 05:15 | Naoki Tajima v Yuki Mochizuki | 0-6,1-6 |
| ITF M25 Changwon | 2023/06/15 01:00 | Naoki Tajima v Chan-Yeong Oh | 1-6,3-6 |
| ITF M25 Changwon | 2023/06/12 04:30 | Naoki Tajima v Hyun Woo Cho | 6-1,6-0 |
| ITF M25 Changwon | 2023/06/12 00:55 | Naoki Tajima v Seonghun Kim | 6-4,6-0 |
| ITF M25 Changwon | 2023/06/11 04:25 | Naoki Tajima v Je Won Jeon | 6-1,6-1 |
| ITF M15 Karuizawa | 2023/05/30 03:30 | Ryotaro Matsumura v Naoki Tajima | 3-6,6-1,6-4 |
| Challenger Iasi | 2023/07/09 10:20 | Kalin Ivanovski v Brandon Walkin | 6-2,6-2 |
| ITF M15 Wroclaw | 2023/06/28 12:50 | Filip Kosinski v Brandon Walkin | 2-6,0-6 |
| ITF M25 Poprad | 2023/06/20 09:40 | Brandon Walkin v Vladyslav Orlov | 3-6,4-6 |
| ITF M15 Sarajevo | 2023/06/08 07:00 | Brandon Walkin v Dusan Obradovic | 6-3,6-7,4-6 |
| ITF M15 Sarajevo | 2023/06/07 07:00 | Bozo Barun v Brandon Walkin | 4-6,2-6 |
| ITF M25 Kiseljak | 2023/05/31 10:55 | Brandon Walkin v Kirill Kivattsev | 6-7,6-7 |
| ITF M25 Kiseljak | 2023/05/30 09:05 | Brandon Walkin v Gal Emersic Potocnik | 7-5,6-0 |
| ITF M25 Kiseljak | 2023/05/29 09:30 | Brandon Walkin v Lukas Rohseano | 6-2,6-1 |