Stadium: Court 2 Round: 25 Ground: Clay
| ITF Germany F8 | 2018/07/18 13:00 | Elmar Ejupovic v Marcelo Zormann | 6-4,6-4 |
| ITF Netherlands F3 | 2018/07/10 13:45 | Marcelo Zormann v Tom Farquharson | 7-6,5-7,5-7 |
| ITF Brazil F4 | 2018/05/15 20:00 | Marcelo Zormann v Thiago Seyboth Wild | 3-6,6-4,3-6 |
| ITF Brazil F3 | 2018/05/13 13:30 | Oscar Jose Gutierrez v Marcelo Zormann | 6-2,6-2 |
| ITF Brazil F3 | 2018/05/12 14:00 | Tomas Martin Etcheverry v Marcelo Zormann | 7-5,6-7,4-6 |
| ITF Brazil F3 | 2018/05/11 15:30 | Marcelo Zormann v Daniel Dutra Da Silva | 6-4,7-5 |
| ITF Brazil F3 | 2018/05/09 23:25 | Carlos Eduardo Severino v Marcelo Zormann | 1-6,1-6 |
| ITF Brazil F3 | 2018/05/08 13:00 | Alejo Vilaro v Marcelo Zormann | 4-6,6-7 |
| ITF Czech Republic F6 Qual | 2018/07/07 13:30 | Ondrej Krstev v Michael Gloeckler | 3-6,1-6 |
| 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 |