Stadium: Hercikova C2 Round: 62 Ground: Clay
| ITF Germany F4 | 2018/06/16 08:00 | Ondrej Krstev v James Markiewicz | 6-1,6-2 |
| ITF Czech Republic F2 | 2018/05/24 10:10 | Patrik Rikl v Ondrej Krstev | 6-1,6-4 |
| ITF Czech Republic F2 | 2018/05/22 08:00 | Ondrej Krstev v Kody Pearson | 2-6,7-5,6-3 |
| ITF Hungary F1 | 2018/05/08 08:00 | Ondrej Krstev v Nicolae Frunza | 0-6,0-6 |
| ITF Bahrain F1 | 2018/03/21 08:00 | Jelle Sels v Ondrej Krstev | 6-3,6-3 |
| ITF Bahrain F1 | 2018/03/20 13:05 | Ondrej Krstev v Elyas Abdulnabi | 6-4,6-2 |
| ITF Greece F2 | 2018/03/06 12:25 | Marko Tepavac v Ondrej Krstev | 6-4,6-2 |
| ITF Greece F2 | 2018/03/05 07:30 | Jeffrey Schorsch v Ondrej Krstev | 4-6,3-6 |
| ITF Czech Republic F6 Qual | 2018/07/07 09:30 | Dominik Hruncak v Michael Gloeckler | 3-6,0-6 |
| ITF Hungary F3 Qual | 2018/05/21 08:00 | Jonathan Morr v Michael Gloeckler | 7-6,6-2 |
| ITF Hungary F3 Qual | 2018/05/20 10:00 | Dominik Kisantal v Michael Gloeckler | 1-6,1-6 |
| ITF Germany F14 | 2017/10/08 07:00 | Mick Veldheer v Michael Gloeckler | 6-1,7-6 |
| ITF Croatia F4 Qual | 2016/03/19 10:30 | Toni Simonovic v Michael Gloeckler | 7-5,6-4 |