| UTR Pro Tennis Series Brisbane | 2021/09/22 07:30 | Alexander Crnokrak v Sam Oster | 6-2,5-1 |
| UTR Pro Tennis Series Carrara | 2021/10/14 23:00 | Patrick C Beadman v Alexander Crnokrak | 2-6,2-6 |
| UTR Pro Tennis Series Carrara | 2021/10/12 06:30 | Sam Ryan Ziegann v Alexander Crnokrak | 0-6,2-5 |
| UTR Pro Tennis Series Brisbane | 2021/09/26 00:30 | Alexander Crnokrak v Calum Puttergill | 6-1,7-5 |
| UTR Pro Tennis Series Brisbane | 2021/09/25 02:00 | Alexander Crnokrak v Jeremy Jin | 6-4,6-2 |
| UTR Pro Tennis Series Brisbane | 2021/09/24 04:00 | Alexander Crnokrak v Tai Leonard Sach | 6-4,6-3 |
| UTR Pro Tennis Series Brisbane | 2021/09/22 07:30 | Alexander Crnokrak v Sam Oster | 6-2,5-1 |
| UTR Pro Tennis Series Brisbane | 2021/09/21 04:30 | Alexander Crnokrak v Cade Birrell | 5-7,7-6,5-3 |
| UTR Pro Tennis Series Brisbane | 2021/09/20 01:30 | Jayden Court v Alexander Crnokrak | 5-7,2-6 |
| UTR Pro Tennis Series Carrara | 2021/10/12 03:00 | Patrick C Beadman v Sam Oster | 2-6,5-7 |
| UTR Pro Tennis Series Carrara | 2021/10/11 00:30 | Sam Oster v Jack Moore | 6-4,6-3 |
| UTR Pro Tennis Series Brisbane | 2021/09/25 23:00 | Sam Oster v Leo Phijidvijan | 4-6,6-4,6-1 |
| UTR Pro Tennis Series Brisbane | 2021/09/24 01:00 | Cade Birrell v Sam Oster | 6-2,6-4 |
| UTR Pro Tennis Series Brisbane | 2021/09/23 04:30 | Jayden Court v Sam Oster | 6-3,6-3 |
| UTR Pro Tennis Series Brisbane | 2021/09/22 07:30 | Alexander Crnokrak v Sam Oster | 6-2,5-1 |
| UTR Pro Tennis Series Brisbane | 2021/09/20 01:30 | Tai Leonard Sach v Sam Oster | 3-6,4-6 |
| UTR Pro Tennis Series Brisbane | 2021/07/31 00:30 | Jeremy Jin v Sam Oster | 7-6,5-3 |