| UTR Pro Carrara | 2023/08/10 23:00 | Sam Oster v Tomislav E Papac | 4-6,4-6 |
| UTR Pro Carrara | 2023/08/09 06:00 | Sam Oster v Jeremy Beale | 0-6,1-6 |
| UTR Pro Carrara | 2023/08/07 23:00 | Sam Oster v Sam Ryan Ziegann | 6-4,4-6,6-7 |
| UTR Pro Carrara | 2023/08/07 00:30 | Thomas Hann v Sam Oster | 6-0,7-5 |
| ITF M15 Caloundra | 2023/08/02 03:20 | Tai Leonard Sach v Sam Oster | 6-1,6-3 |
| ITF M15 Caloundra | 2023/08/01 01:45 | James Watt v Sam Oster | 6-7,6-2,7-10 |
| ITF M15 Caloundra | 2023/07/31 00:00 | Sam Oster v Seungmin Park | 6-2,6-2 |
| ITF M15 Caloundra | 2023/07/30 00:00 | Thomas Nicholas Gadecki v Sam Oster | 4-6,4-6 |
| ITF M15 Caloundra | 2023/07/30 00:00 | Patrick Fitzgerald v Alexey Shtengelov | 6-4,6-4 |
| ITF M15 Casablanca | 2023/06/26 13:30 | Enrique Bogo v Alexey Shtengelov | 6-0,6-2 |
| ITF M15 Casablanca | 2023/06/19 12:00 | Fares Zakaria v Alexey Shtengelov | 6-4,6-0 |
| ITF M15 Casablanca | 2023/06/18 14:30 | Oussama Bouayad v Alexey Shtengelov | 3-6,0-6 |
| ITF M15 Rabat | 2023/06/11 10:00 | Alexey Shtengelov v Nikita Ianin | 6-7,6-3,10-7 |
| ITF M15 Tanger | 2023/06/04 09:00 | Joan Nadal Vives v Alexey Shtengelov | 6-1,7-6 |
| ITF M15 Tabasco | 2023/05/22 16:00 | Alexey Shtengelov v Graham Maassen | 3-6,3-6 |
| ITF M15 Tabasco | 2023/05/21 19:00 | Jean-Christian Morandais v Alexey Shtengelov | 3-6,6-1,8-10 |