Stadium: Hard Court 2 Round: 54 Ground: Hardcourt outdoor
| 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 Serbia F8 Qual | 2016/09/17 07:00 | Shinnosuke Hiramatsu v Christos Keisidis | 6-4,6-3 |
| ITF Serbia F7 Qual | 2016/09/11 10:00 | Borna Gojo v Christos Keisidis | 6-2,6-2 |
| ITF Serbia F7 Qual | 2016/09/10 13:30 | Christos Keisidis v Nenad Vladusic | 6-4,6-2 |
| ITF Serbia F5 | 2016/08/17 15:25 | Tomislav Brkic v Christos Keisidis | 6-1,4-6,6-2 |
| ITF Serbia F5 Qual | 2016/08/15 09:05 | Ivan Sabanov v Christos Keisidis | 4-6,3-6 |
| ITF M15 Heraklion | 2019/05/15 07:00 | Jonas Trinker v Moritz Thiem | 6-4,6-1 |
| ITF M15 Heraklion | 2019/05/14 07:00 | Moritz Thiem v Leon Hoeveler | 7-5,6-2 |
| ITF M15 Heraklion | 2019/05/13 07:00 | Moritz Thiem v Harry Meehan | 6-2,7-6 |
| ITF M15 Antalya | 2019/05/01 07:15 | Moritz Thiem v Georgii Kravchenko | 4-6,0-6 |
| ITF M15 Antalya | 2019/04/30 07:15 | Moritz Thiem v Aleksei Khomich | 6-3,6-3 |
| ITF M15 Antalya | 2019/04/29 06:45 | Moritz Thiem v Burak Bilgin | 6-1,6-1 |
| ITF M15 Antalya | 2019/04/24 10:40 | Moritz Thiem v Jesper De Jong | 5-7,2-6 |
| ITF M15 Antalya | 2019/04/23 07:00 | Moritz Thiem v Milos Vukovic | 6-3,6-0 |