| UTR Pro Tennis Series California | 2021/05/28 16:30 | Eric Hadigian v Nicolas Barrientos | 3-6,2-6 |
| UTR Pro Tennis Series Nevada | 2021/06/30 16:30 | Eric Hadigian v Bjorn Swenson | 7-6,2-6,1-6 |
| UTR Pro Tennis Series Nevada | 2021/06/29 18:00 | Eric Hadigian v Hudson Rivera | 5-7,6-4,5-1 |
| UTR Pro Tennis Series Nevada | 2021/06/28 15:00 | Eric Hadigian v Finn Bass | 7-6,6-3 |
| ITF M25 Wichita | 2021/06/07 15:00 | Gabriel Diallo v Eric Hadigian | 6-2,7-6 |
| UTR Pro Tennis Series California | 2021/05/28 16:30 | Eric Hadigian v Nicolas Barrientos | 3-6,2-6 |
| UTR Pro Tennis Series California | 2021/05/26 16:30 | Eric Hadigian v Paul Barretto | 6-2,5-3 |
| UTR Pro Tennis Series California | 2021/05/24 16:30 | Eric Hadigian v Jett Middleton | 6-3,5-3 |
| UTR Pro Tennis Series California | 2021/05/23 19:30 | Hugo Hashimoto v Eric Hadigian | 3-6,6-4,3-6 |
| UTR Pro Tennis Series Nevada | 2021/06/30 16:30 | Finn Bass v Nicolas Barrientos | 3-6,3-6 |
| UTR Pro Tennis Series Nevada | 2021/06/28 15:00 | Hudson Rivera v Nicolas Barrientos | 3-6,3-6 |
| UTR Pro Tennis Series Nevada | 2021/06/25 15:00 | Nicolas Barrientos v Alfredo Perez | 6-7,6-4,3-5 |
| UTR Pro Tennis Series Nevada | 2021/06/24 15:00 | Nicolas Barrientos v Kyle Kang | 6-1,5-4 |
| UTR Pro Tennis Series Nevada | 2021/06/23 16:30 | Nicholas Heng v Nicolas Barrientos | 3-6,2-6 |
| UTR Pro Tennis Series Nevada | 2021/06/22 18:00 | Alexander Stater v Nicolas Barrientos | 6-7,6-1,3-6 |
| ITF M25 Tulsa | 2021/06/19 13:55 | Nicolas Barrientos v Nicolas Kicker | 6-1,2-6,1-6 |
| ITF M25 Tulsa | 2021/06/18 16:00 | Nicolas Barrientos v Ezekiel Clark | 4-6,6-0,7-6 |