| ITF M15 Heraklion | 2020/03/10 08:00 | Ioannis Xilas v Christos Keisidis | 0-6,6-4,10-6 |
| ITF M15 Heraklion | 2020/03/04 12:10 | Christos Keisidis v Antoine Cornut-Chauvinc | 5-7,2-6 |
| ITF M15 Heraklion | 2020/02/26 11:25 | Markos Kalovelonis v Christos Keisidis | 5-7,6-4,6-4 |
| ITF M15 Heraklion | 2020/02/25 08:00 | Christos Keisidis v Nicolas Tepmahc | 6-3,4-6,13-11 |
| ITF M15 Heraklion | 2020/02/24 08:30 | Mathys Erhard v Christos Keisidis | 4-6,6-3,12-14 |
| ITF M15 Heraklion | 2020/02/20 08:25 | Guy Den Heijer v Christos Keisidis | 6-4,4-6,6-3 |
| ITF M15 Heraklion | 2020/02/18 13:05 | Jonas Trinker v Christos Keisidis | 2-6,7-6,4-6 |
| ITF M15 Heraklion | 2020/02/09 08:00 | Lodewijk Weststrate v Christos Keisidis | 6-4,6-2 |
| UTR Pro Tennis Series Pazardzhik | 2021/04/03 08:30 | Denislav Prodanov v Pierre Faivre | 0-6,1-6 |
| UTR Pro Tennis Series Pazardzhik | 2021/04/02 10:00 | Jules Marie v Denislav Prodanov | 6-1,6-0 |
| ITF Bulgaria F1 Qual | 2017/05/07 09:00 | Denislav Prodanov v Radoslav Shandarov | 0-6,6-2,6-7 |