| UTR Pro Tennis Series Brisbane | 2021/07/29 00:30 | Sam Ryan Ziegann v Sam Oster | 1-3 |
| UTR Pro Tennis Series Carrara | 2021/10/15 00:30 | Sam Ryan Ziegann v Jack Moore | 6-3,6-4 |
| UTR Pro Tennis Series Carrara | 2021/10/12 06:30 | Sam Ryan Ziegann v Alexander Crnokrak | 0-6,2-5 |
| UTR Pro Tennis Series Carrara | 2021/10/11 00:30 | Patrick C Beadman v Sam Ryan Ziegann | 3-6,3-6 |
| UTR Pro Tennis Series Brisbane | 2021/09/25 00:30 | Sam Ryan Ziegann v Tai Leonard Sach | 6-7,3-5 |
| UTR Pro Tennis Series Brisbane | 2021/09/24 00:00 | Sam Ryan Ziegann v Patrick C Beadman | 6-7,6-2,6-5 |
| UTR Pro Tennis Series Brisbane | 2021/09/23 04:30 | Sam Ryan Ziegann v Leo Phijidvijan | 6-1,5-1 |
| UTR Pro Tennis Series Brisbane | 2021/09/22 00:00 | Scott Puodziunas v Sam Ryan Ziegann | 3-6,6-3,7-6 |
| UTR Pro Tennis Series Brisbane | 2021/09/21 01:30 | Declan Townsend v Sam Ryan Ziegann | 1-6,4-6 |
| UTR Pro Tennis Series Carrara | 2021/10/15 23:00 | Alexander Crnokrak v Sam Oster | 6-1,5-1 |
| 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 |