| UTR Pro Match Series | 2021/09/25 23:00 | Oster, Sam v Leo Phijidvijan | 4-6,6-4,6-1 |
| UTR Pro Match Series | 2021/09/24 01:00 | 비렐, 케이드 v Oster, Sam | 6-2,6-4 |
| UTR Pro Match Series | 2021/09/23 04:30 | 코우르트, 제이덴 v Oster, Sam | 6-3,6-3 |
| UTR Pro Match Series | 2021/09/22 07:30 | 크르노크라크, 알렉산더 v Oster, Sam | 6-2,5-1 |
| UTR Pro Match Series | 2021/09/20 01:30 | Tai Leonard Sach v Oster, Sam | 3-6,4-6 |
| UTR Pro Match Series | 2021/07/31 00:30 | Jeremy Jin v Oster, Sam | 7-6,5-3 |
| UTR Pro Match Series | 2021/07/29 23:00 | 부지그, 모에라니 v Oster, Sam | 6-4,5-4 |
| UTR Pro Match Series | 2021/07/29 00:30 | 리안 지에간, 삼 v Oster, Sam | 1-3 |