Stadium: Stadium Round: 26 Ground: Hardcourt outdoor
| ITF M25 Poznan | 2023/08/23 10:15 | Maciej Rajski v Marcel Kamrowski | 6-3,6-2 |
| Challenger Grodzisk Mazowiecki | 2023/08/13 10:30 | Marcel Kamrowski v Rubin Statham | 7-6,2-6,5-7 |
| ITF M25 Lodz | 2023/08/09 08:00 | Marcel Kamrowski v Vilius Gaubas | 3-6,6-3,5-7 |
| ITF M25 Lodz | 2023/08/08 09:00 | Marcel Kamrowski v Kacper Szymkowiak | 6-4,7-5 |
| ITF M25 Lodz | 2023/08/07 13:30 | Egor Baklanov v Marcel Kamrowski | 3-6,4-6 |
| ITF M25 Lodz | 2023/08/07 07:30 | Marcel Kamrowski v Borys Zgola | 6-4,6-3 |
| ITF M25 Rome | 2023/05/28 10:00 | Marcel Kamrowski v Giannicola Misasi | 6-7,6-3,4-10 |
| ITF M15 Santo Domingo | 2022/11/23 13:30 | Marcel Kamrowski v Roberto Cid Subervi | 6-7,2-6 |
| ITF M25 Sapporo | 2023/09/15 03:20 | Kousuke Ogura v Kazuki Nishiwaki | 4-6,7-5,2-6 |
| ITF M25 Sapporo | 2023/09/12 07:10 | Sanhui Shin v Kousuke Ogura | 7-5,4-6,6-7 |
| ITF M25 Sapporo | 2023/09/05 02:00 | Jumpei Yamasaki v Kousuke Ogura | 6-4,6-4 |
| Challenger Lima | 2023/08/20 18:20 | Sebastian Rodriguez v Kousuke Ogura | 6-4,7-5 |
| Challenger Santo Domingo | 2023/08/07 21:00 | Jorge Panta v Kousuke Ogura | 4-6,6-1,6-2 |
| ITF M15 Pittsburgh | 2023/07/27 15:00 | Kousuke Ogura v Felix Corwin | 6-2,5-7,1-6 |
| ITF M15 Pittsburgh | 2023/07/25 16:00 | Kousuke Ogura v Enrique Pena | 7-5,6-3 |
| ITF M15 Rochester | 2023/07/21 18:50 | Tyler Stice v Kousuke Ogura | 6-1,6-3 |