Stadium: Center Court 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 Kuwait F1 Qual | 2017/10/28 10:00 | Roy Sarut De Valk v Yuichiro Inui | 5-7,1-6 |
| ITF Netherlands F5 | 2017/08/14 12:00 | Roy Sarut De Valk v Joris Bodin | 7-6,6-7,7-6 |
| ITF Netherlands F5 | 2017/08/13 08:00 | Roy Sarut De Valk v Tom Clavel | 6-3,6-1 |
| ITF Belgium F8 Qual | 2017/08/07 08:00 | Cristopher Kohl v Roy Sarut De Valk | 2-6,6-2,7-6 |
| ITF Belgium F8 Qual | 2017/08/06 07:30 | Marcelo Plaza v Roy Sarut De Valk | 5-7,4-6 |
| ITF Germany F9 | 2017/07/31 15:00 | Roy Sarut De Valk v Nico Mertens | 2-6,6-7 |
| ITF Germany F9 | 2017/07/31 09:00 | Roy Sarut De Valk v Gijs Buntsma | 2-6,6-2,6-2 |
| ITF Germany F9 | 2017/07/30 13:30 | Roy Sarut De Valk v Mikhail Minakov | 6-0,6-0 |