Stadium: Stadium Round: 25 Ground: Hardcourt outdoor
| ITF M25 Calabasas | 2021/10/26 22:50 | Lucas Gomez v Ethan Quinn | 1-6,5-7 |
| UTR Pro Tennis Series California | 2021/07/30 18:00 | Lucas Gomez v Ethan Quinn | 6-2,6-2 |
| UTR Pro Tennis Series California | 2021/07/28 15:00 | Ethan Quinn v Aditya Gupta | 6-3,3-6,5-3 |
| UTR Pro Tennis Series California | 2021/07/27 19:30 | Ethan Quinn v John B D Otico | 6-4,3-6,5-4 |
| UTR Pro Tennis Series California | 2021/07/26 16:30 | Ethan Quinn v Alexey Nesterov | 6-7,7-5,6-2 |
| ITF M15 Edwardsville | 2021/07/20 15:30 | Kyle Seelig v Ethan Quinn | 6-4,6-3 |
| ITF M15 Edwardsville | 2021/07/19 16:30 | Ethan Quinn v Carson Haskins | 7-5,6-2 |
| Challenger Columbus | 2021/09/20 14:00 | Gijs Brouwer v Alexander Sarkissian | 6-4,6-2 |
| Challenger Columbus | 2021/09/19 14:00 | Jake Van Emburgh v Alexander Sarkissian | 6-7,4-6 |
| Challenger Cary | 2021/09/14 16:35 | Alexander Sarkissian v Bjorn Fratangelo | 2-6,7-5,1-6 |
| Challenger Cary | 2021/09/13 16:55 | Alexis Galarneau v Alexander Sarkissian | 7-5,2-6,4-6 |
| ATP Los Cabos | 2021/07/21 00:00 | Alexander Sarkissian v Yasutaka Uchiyama | 7-5,0-6,4-6 |
| ATP Los Cabos | 2021/07/18 00:00 | Alexander Sarkissian v Raymond Sarmiento | 6-4,6-1 |
| ITF M25 Wichita | 2021/06/10 15:00 | Patrick Kypson v Alexander Sarkissian | 6-2,4-6,6-3 |
| ITF M25 Wichita | 2021/06/09 17:45 | Trent Bryde v Alexander Sarkissian | 3-6,6-0,4-6 |