| UTR Pro Winston-Salem | 2023/11/27 22:30 | Nathan, Jamieson v Holden Koons | 2-6,0-6 |
| ITF M15 Winston-Salem | 2023/11/06 19:00 | Nathan, Jamieson v Ravichander, Ishaan | 2-6,1-6 |
| UTR Pro Winston-Salem | 2023/09/09 22:30 | Nathan, Jamieson v Alhaqbani, Saud | 6-4,7-5 |
| UTR Pro Winston-Salem | 2023/09/07 19:12 | Matthew Thomson v Nathan, Jamieson | 1-6,6-3,6-2 |
| UTR Pro Tennis Series Bendigo | 2022/12/17 23:00 | Alexander Despoja v Nathan, Jamieson | 3-6,6-4,5-2 |
| UTR Pro Tennis Series Bendigo | 2022/12/17 03:32 | Marin Dumitru v Nathan, Jamieson | 2-6,2-6 |
| UTR Pro Tennis Series Bendigo | 2022/12/16 00:45 | Andre Filep v Nathan, Jamieson | 4-6,4-6 |
| UTR Pro Tennis Series Bendigo | 2022/12/14 22:00 | Jeremy Zhang v Nathan, Jamieson | 6-3,5-7,5-1 |
| ITF M15 Novi Sad | 2023/07/24 13:20 | Matija Samardzic v Pavel Verbin | 4-6,4-6 |
| ITF M15 Novi Sad | 2023/07/23 15:00 | Evans, Thomas v Matija Samardzic | 4-6,6-3,7-10 |
| ITF M15 Belgrade | 2023/06/25 09:30 | Edoardo Zanada v Matija Samardzic | 7-5,6-3 |
| Coupe Davis | 2023/06/17 07:30 | Matija Samardzic v Petros Chrysochos | 5-7,2-6 |
| Coupe Davis | 2023/06/14 07:30 | Daniil Glinka v Matija Samardzic | 6-4,6-0 |
| UTR Pro Thessaloniki | 2023/04/30 05:00 | Matija Samardzic v Filip, Vladimir | 6-3,6-4 |
| UTR Pro Thessaloniki | 2023/04/29 08:00 | Matija Samardzic v Axel Bergdahl | 7-5,6-2 |
| UTR Pro Thessaloniki | 2023/04/28 06:30 | Matija Samardzic v Stefan A Andreescu | 3-6,2-5 |