Stadium: Hard 6 Round: 44 Ground: Hardcourt outdoor
| ITF M15 Zlatibor | 2019/09/16 08:00 | Christos Keisidis v Roko Horvat | 1-6,5-7 |
| ITF M15 Zlatibor | 2019/09/15 06:30 | Tadija Radovanovic v Christos Keisidis | 2-6,1-6 |
| ITF M15 Heraklion | 2019/05/28 07:00 | Christos Keisidis v Gian Marco Ortenzi | 4-6,4-6 |
| ITF M15 Heraklion | 2019/05/27 07:00 | Calum Puttergill v Christos Keisidis | 4-6,3-6 |
| ITF M15 Heraklion | 2019/05/20 07:00 | Christos Keisidis v Moritz Thiem | 2-6,3-6 |
| ITF M15 Sozopol | 2019/05/07 09:00 | Boris Pokotilov v Christos Keisidis | 6-3,3-6,10-3 |
| ITF Bulgaria F1 | 2018/05/15 07:00 | Christos Keisidis v Alexander Igoshin | 4-6,6-1,1-6 |
| ITF Bulgaria F1 | 2018/05/13 07:00 | Zlatan Palazov v Christos Keisidis | 5-7,0-6 |
| ITF M15 Burgas | 2019/10/07 07:00 | Benjamin Niv v Dian Nedev | 6-1,7-5 |
| ITF M15 Burgas | 2019/10/06 08:00 | Dian Nedev v Mihailo Radosavljevic | 6-4,6-2 |
| ITF M15 Varna | 2019/09/10 08:00 | Juan Pablo Paz v Dian Nedev | 6-2,7-6 |
| ITF M15 Plovdiv | 2019/06/04 08:30 | Gorazd Srbljak v Dian Nedev | 7-6,6-0 |
| ITF M15 Plovdiv | 2019/06/03 10:00 | Dian Nedev v Vladimir Filip | 7-6,6-0 |
| ITF M15 Sozopol | 2019/05/07 10:00 | Plamen Milushev v Dian Nedev | 6-2,6-2 |
| ITF Greece F8 | 2018/11/10 07:30 | Dian Nedev v George Davies | 6-7,2-6 |
| ITF Greece F7 | 2018/11/03 10:00 | Alexandros Roumpis v Dian Nedev | 6-1,6-2 |