stadio: Court 1 Round: 27 Ground: Hardcourt outdoor
| Challenger Chicago DM | 2023/07/12 18:00 | Nam/Sitak v Puttergill/Sinclair | 6-3,6-2 |
| Challenger Bloomfield Hills DM | 2023/07/06 21:00 | Nam/Sitak v Harrison/Mchugh | 6-7,6-7 |
| Challenger Bloomfield Hills DM | 2023/07/05 22:40 | Nam/Sitak v Demuth/Martin | 6-7,6-1,13-11 |
| Challenger Cali DM | 2023/06/23 23:30 | Andreozzi/Rodriguez v Nam/Sitak | 6-3,6-3 |
| Challenger Cali DM | 2023/06/22 21:30 | Nam/Sitak v Heide/Reis da Silva | 6-2,6-4 |
| Challenger Cali DM | 2023/06/20 21:35 | Nam/Sitak v Melzer/Rehberg | 1-6,6-4,13-11 |
| Challenger Palmas del Mar DM | 2023/06/16 19:30 | Matsui/Uesugi v Nam/Sitak | 6-4,7-5 |
| Challenger Palmas del Mar DM | 2023/06/15 20:50 | Alves/Heide v Nam/Sitak | 1-6,7-6,8-10 |