Stadium: Cancha Central Round: 19 Ground: Clay
| ITF Colombia F7 | 2015/08/05 17:15 | Federico Zeballos v Nicolas Barrientos | 3-6,0-6 |
| ITF Colombia F8 | 2014/11/20 15:00 | Nicolas Barrientos v Federico Zeballos | 4-6,5-7 |
| Challenger Lima | 2021/09/26 19:50 | Alexis Gautier v Nicolas Barrientos | 0-6,0-6 |
| Challenger Cary | 2021/09/12 17:50 | Alexis Galarneau v Nicolas Barrientos | 6-4,6-1 |
| Challenger St. Tropez | 2021/08/30 10:15 | Alexis Galarneau v Nicolas Barrientos | 2-6,6-1,6-4 |
| Challenger St. Tropez | 2021/08/29 13:00 | Cesar Bouchelaghem v Nicolas Barrientos | 4-6,0-6 |
| UTR Pro Tennis Series Nevada | 2021/07/04 15:00 | Nicolas Barrientos v Evan Song | 1-5 |
| UTR Pro Tennis Series Nevada | 2021/07/03 15:00 | Nicolas Barrientos v Justin Boulais | 4-6,6-3,5-4 |
| UTR Pro Tennis Series Nevada | 2021/07/02 15:00 | Bjorn Swenson v Nicolas Barrientos | 0-6,1-5 |
| UTR Pro Tennis Series Nevada | 2021/07/01 15:00 | Eric Hadigian v Nicolas Barrientos | 2-6,3-6 |
| Challenger Lima | 2021/09/26 17:30 | Federico Zeballos v Evan King | 4-6,6-2,6-3 |
| ITF M25 Oviedo | 2021/08/31 10:00 | Johan Nikles v Federico Zeballos | 7-6,6-2 |
| UTR Pro Tennis Series Barcelona | 2021/08/15 08:00 | Olexiy Kolisnyk v Federico Zeballos | 2-6,6-2,6-4 |
| UTR Pro Tennis Series Barcelona | 2021/08/14 06:30 | Federico Zeballos v Oleksandr Bielinskyi | 6-0,6-3 |
| UTR Pro Tennis Series Barcelona | 2021/08/13 08:00 | Bruno P Navarro v Federico Zeballos | 1-5 |
| UTR Pro Tennis Series Barcelona | 2021/08/12 08:30 | Luc Fomba v Federico Zeballos | 7-5,5-3 |
| UTR Pro Tennis Series Barcelona | 2021/08/09 11:00 | Marat Deviatiarov v Federico Zeballos | 5-7,1-6 |
| UTR Pro Tennis Series Barcelona | 2021/08/07 08:30 | Kuzey Cekirge v Federico Zeballos | 6-4,4-6,7-5 |