| UTR Pro Tennis Series California | 2021/05/22 15:00 | 하디기안, 에릭 v Alex Kuperstein | 3-6,5-6 |
| UTR Pro Tennis Series California | 2021/12/01 21:54 | 하디기안, 에릭 v Alexander Stater | 4-6,7-6,5-1 |
| UTR Pro Tennis Series California | 2021/11/30 21:51 | 하디기안, 에릭 v Arthur Bellegy | 3-6,6-2,5-2 |
| UTR Pro Tennis Series California | 2021/11/29 17:30 | 하디기안, 에릭 v Tomas Kopczynski | 0-0 |
| ITF M25 Calabasas | 2021/10/27 19:20 | 하디기안, 에릭 v 안젤, 자이미 플로이드 | 2-6,3-6 |
| ITF M25 Calabasas | 2021/10/26 20:00 | 치우, 조르단 v 하디기안, 에릭 | 2-6,6-7 |
| ITF M25 Calabasas | 2021/10/26 17:00 | 멘도자, 주렌스 조시모 v 하디기안, 에릭 | 4-6,2-6 |
| UTR Pro Tennis Series Dallas | 2021/08/07 16:00 | 하디기안, 에릭 v Ryan Ybarra | 7-6,4-6,5-6 |
| UTR Pro Tennis Series Dallas | 2021/08/06 17:30 | 하디기안, 에릭 v Takeuchi, Kento (1987) | 3-6,2-5 |
| UTR Pro Tennis Series California | 2021/12/01 17:30 | Ryan Nuno v Alex Kuperstein | 3-6,0-5 |
| UTR Pro Tennis Series California | 2021/11/29 20:00 | Arthur Bellegy v Alex Kuperstein | 0-6,4-6 |
| UTR Pro Tennis Series California | 2021/11/17 21:43 | Chase Thompson v Alex Kuperstein | 4-3 |
| UTR Pro Tennis Series California | 2021/11/16 20:30 | William Peters v Alex Kuperstein | 7-6,6-3 |
| UTR Pro Tennis Series California | 2021/11/15 19:00 | Alex Kuperstein v 바스톨라, 아브히세크 | 6-2,6-0 |
| UTR Pro Tennis Series California | 2021/11/14 16:00 | Alex Kuperstein v 데르캇, 즈데네크 | 6-3,7-5 |
| UTR Pro Tennis Series California | 2021/11/13 16:00 | Alex Kuperstein v Ethan Schiffman | 6-0,6-2 |
| UTR Pro Tennis Series California | 2021/11/09 17:30 | Rithvik Krishna v Alex Kuperstein | 6-4,3-6,0-5 |