Stadium: Court 9 Round: 62 Ground: Hardcourt outdoor
| ITF M15 Caloundra | 2023/07/30 00:00 | Thomas Nicholas Gadecki v Sam Oster | 4-6,4-6 |
| ITF M15 Caloundra | 2023/07/25 02:05 | Callum Gale v Sam Oster | 5-7,7-5,10-3 |
| ITF M15 Caloundra | 2023/07/24 06:30 | Sam Oster v Lawrence Bataljin | 5-7,6-3,10-8 |
| ITF M15 Caloundra | 2023/07/23 01:00 | William Jesser v Sam Oster | 3-6,1-6 |
| ITF M15 Nakhon Si Thammarat | 2023/07/02 05:45 | Sam Oster v Corban Crowther | 1-6,2-6 |
| ITF M15 Celje | 2023/06/26 08:00 | Miha Vetrih v Sam Oster | 6-0,6-2 |
| ITF M15 Store | 2023/06/19 08:30 | Pietro Pampanin v Sam Oster | 6-4,6-2 |
| ITF M15 Litija | 2023/06/12 11:00 | Sam Oster v Maurus Malgiaritta | 2-6,3-6 |
| ITF M15 Caloundra | 2023/07/25 04:20 | Seungmin Park v Jake Delaney | 6-4,4-6,5-7 |
| ITF M15 Jakarta | 2023/06/22 03:55 | Omar Jasika v Seungmin Park | 6-0,7-5 |
| ITF M15 Jakarta | 2023/06/21 03:50 | Patrik Oplustil v Seungmin Park | 6-0,1-6,4-6 |
| ITF M25 Changwon | 2023/06/14 01:00 | Renta Tokuda v Seungmin Park | 7-6,6-1 |
| ITF M25 Changwon | 2023/06/12 05:35 | Seungmin Park v Minjong Park | 0-6,6-3,10-5 |
| ITF M25 Changwon | 2023/06/11 02:30 | Seungmin Park v Sam Baldwin | 6-2,6-3 |