Stadium: Court 8 Round: 25 Ground: Hardcourt outdoor
| ITF - Burnie M25 | 2023/02/05 01:00 | Issei Okamura v Mason Naumovski | 6-1,6-3 |
| ITF - Sapporo M25 | 2023/09/07 02:40 | Sora Fukuda v Issei Okamura | 6-1,6-2 |
| ITF - Sapporo M25 | 2023/09/05 04:15 | Issei Okamura v Seiya Nakanishi | 6-1,6-1 |
| ITF - Sapporo M25 | 2023/09/04 00:55 | Issei Okamura v Shinnosuke Hiramatsu | 7-5,6-4 |
| ITF - Tainan M25 | 2023/08/16 02:00 | Ergi Kirkin v Issei Okamura | 6-0,6-2 |
| ITF - Herzlia M25 | 2023/08/09 11:25 | Amit Vales v Issei Okamura | 6-4,3-6,6-3 |
| ITF - Herzlia M25 | 2023/08/08 06:30 | Issei Okamura v Eyal Shyovitz | 6-4,6-3 |
| ITF - Herzlia M25 | 2023/08/07 06:30 | Issei Okamura v Raz Katz | 6-1,6-1 |
| ITF - Raanana M15 | 2023/08/01 13:20 | Issei Okamura v Ofek Shimanov | 6-4,3-6,2-6 |
| ITF - Darwin M25 | 2023/09/12 05:30 | Corban Crowther v Mason Naumovski | 3-6,4-6 |
| ITF - Caloundra | 2023/07/31 00:00 | Jack Loutit v Mason Naumovski | 7-6,6-0 |
| ITF - Caloundra | 2023/07/24 04:00 | Tai Leonard Sach v Mason Naumovski | 6-0,6-4 |
| ITF - Caloundra | 2023/07/22 23:00 | Mason Naumovski v Nicholas De Vivo | 7-6,6-4 |
| ITF - Jakarta M15 | 2023/06/25 06:30 | Mason Naumovski v Ayush Sharma | 6-1,6-2 |
| ITF - Jakarta M15 | 2023/06/19 02:00 | Mason Naumovski v Tegar A S Wibowo | 6-3,0-6,8-10 |
| ITF - Jakarta M15 | 2023/06/18 05:00 | Mason Naumovski v Ren Nakamura | 6-3,6-3 |
| ITF - Jakarta M15 | 2023/06/12 03:50 | Abhinav Sanjeev Shanmugam v Mason Naumovski | 6-3,6-3 |