| UTR Pro Tennis Series California | 2021/07/27 16:30 | 보이엘, 트리스탄 v 반데카스틸, 퀸 | 2-6,6-2,6-4 |
| UTR Pro Tennis Series California | 2021/07/26 16:30 | 보이엘, 트리스탄 v Sema Pankin | 6-4,6-4 |
| UTR Pro Tennis Series California | 2021/07/23 18:00 | 보이엘, 트리스탄 v Sema Pankin | 6-4,6-7,1-5 |
| UTR Pro Tennis Series California | 2021/07/21 18:00 | 보이엘, 트리스탄 v Colton Smith | 3-6,6-2,5-1 |
| UTR Pro Tennis Series California | 2021/07/20 21:00 | 보이엘, 트리스탄 v Aryan Chaudhary | 6-3,4-6,4-5 |
| UTR Pro Tennis Series California | 2021/07/19 15:00 | 보이엘, 트리스탄 v 네스테로프, 알렉세이 | 6-3,6-4 |
| ITF M15 Madrid | 2020/12/01 09:30 | Facundo Diaz Acosta v 보이엘, 트리스탄 | 6-2,7-6 |
| ITF M15 Sharm El Sheikh | 2020/11/10 10:05 | 브레우트, 릴리안 v 보이엘, 트리스탄 | 6-3,6-4 |
| UTR Pro Tennis Series California | 2021/07/27 21:00 | van Wyk, Kris v Leustian, Stefan | 1-6,0-1 |
| UTR Pro Tennis Series California | 2021/07/26 16:30 | Leustian, Stefan v 반데카스틸, 퀸 | 5-7,4-5 |
| ITF M15 Cancun | 2020/02/19 14:00 | Leustian, Stefan v 스페크, 마티크 | 5-7,5-7 |
| Fort Worth, Singles Qualifying M-ITF-USA-42A | 2019/10/20 15:00 | Leustian, Stefan v 호만, 로날드 | 4-6,6-7 |
| ITF USA F24 | 2018/09/10 17:00 | Leustian, Stefan v 모레노 드 알보란, 니콜라스 | 3-6,2-6 |
| ITF USA F24 | 2018/09/09 18:00 | 골드호프, 게오르지 v Leustian, Stefan | 6-2,5-7,6-7 |
| ITF USA F24 | 2018/09/07 17:30 | Leustian, Stefan v Kaster, Kaptan | 6-2,6-2 |
| ITF USA F7 Qual | 2018/03/11 17:00 | Leustian, Stefan v 루, 틸러 | 6-7,6-7 |