| UTR Pro Tennis Series Zadar | 2021/11/19 09:00 | Deni Zmak v Christos Keisidis | 6-1,6-0 |
| UTR Pro Tennis Series Zadar | 2021/11/18 10:30 | Christos Keisidis v Alexander Chepik | 6-3,6-2 |
| UTR Pro Tennis Series Zadar | 2021/11/16 09:00 | Christos Keisidis v Denis Parshutin | 6-3,6-7,6-3 |
| UTR Pro Tennis Series Zadar | 2021/11/15 12:00 | Olexiy Kolisnyk v Christos Keisidis | 7-5,3-6,4-6 |
| UTR Pro Tennis Series Nis | 2021/10/10 08:00 | Christos Keisidis v Vladimir Popov | 6-1,5-2 |
| UTR Pro Tennis Series Nis | 2021/10/09 11:00 | Christos Keisidis v Lawrence Bataljin | 6-4,6-2 |
| UTR Pro Tennis Series Nis | 2021/10/08 15:45 | Dusan Trunic v Christos Keisidis | 2-6,2-5 |
| UTR Pro Tennis Series Nis | 2021/10/07 08:30 | George Botezan v Christos Keisidis | 6-3,6-3 |
| Challenger Blumenau | 2022/01/14 17:30 | Gonzalo Villanueva v Juan Pablo Paz | 3-6,4-6 |
| Challenger Blumenau | 2022/01/12 15:45 | Noah Rubin v Juan Pablo Paz | 7-6,6-7,3-6 |
| Challenger Blumenau | 2022/01/11 14:30 | Juan Pablo Paz v Gonzalo Lama | 6-7,7-6,6-3 |
| Challenger Buenos Aires | 2022/01/05 15:30 | Juan Pablo Paz v Santiago Rodriguez Taverna | 5-7,6-7 |
| Challenger Buenos Aires | 2022/01/04 16:30 | Juan Pablo Paz v Leonardo Aboian | 6-3,7-5 |
| ITF M25 Rio Cuarto | 2021/12/10 16:00 | Federico Mirgone v Juan Pablo Paz | 2-6,1-6 |
| ITF M25 Rio Cuarto | 2021/12/08 13:00 | Francisco Llanes v Juan Pablo Paz | 3-6,1-6 |
| ITF M25 Villa Allende | 2021/12/05 21:00 | Francisco Comesana v Juan Pablo Paz | 7-6,7-6 |