Stadium: Court 1 Round: 44 Ground: Clay
| ITF Slovakia F3 | 2018/08/07 10:00 | Petko, Leon v Rio Noguchi | 2-6,0-6 |
| ITF Slovakia F2 | 2018/07/29 13:00 | Paul Jubb v Petko, Leon | 6-2,6-2 |
| ITF Slovakia F1 | 2018/07/21 11:00 | Petko, Leon v Tino Kovacic | 2-6,7-5,5-7 |
| ITF Hungary F2 Qual | 2018/05/13 08:00 | Berghaus, Enej v Petko, Leon | 7-6,5-7,6-3 |
| ITF Hungary F7 Qual | 2017/08/27 11:00 | Ianakiev, Milen v Petko, Leon | 6-4,6-0 |
| ITF Hungary F6 Qual | 2017/08/21 08:30 | Mammetgulyyev, Isa v Petko, Leon | 6-3,6-4 |
| ITF Slovakia F3 | 2017/08/07 10:00 | Bojanovic, Darko v Petko, Leon | 6-3,6-2 |
| ITF Slovakia F3 | 2017/08/06 07:00 | Jancovic, Patrik v Petko, Leon | 6-2,3-6,2-6 |
| ITF Slovakia F3 | 2018/08/05 10:00 | Sprlak Puk, Albert v Vajda, Peter | 6-2,6-4 |
| ITF Slovakia F2 | 2018/08/01 09:25 | Vajda, Peter v Semjan, Marek | 4-6,4-6 |
| ITF Slovakia F1 | 2018/07/23 09:00 | Vajda, Peter v Jirousek, Tomas | 0-6,3-6 |
| ITF Slovakia F1 | 2018/07/22 08:00 | Vajda, Peter v Pavlovic, Marko | 6-3,6-1 |
| ITF Slovakia F1 | 2018/07/21 11:00 | Hodor, Samuel v Vajda, Peter | 5-7,3-6 |
| Czech Republic F6, Singles Qualifying | 2018/07/07 14:30 | Muzaev, Richard v Vajda, Peter | 6-7,6-3,6-1 |
| Czech Republic F6, Singles Qualifying | 2018/07/07 09:30 | Vajda, Peter v Bachmaier, Philip | 6-2,6-4 |
| ITF Czech Republic F5 Qual | 2018/07/01 08:00 | Vajda, Peter v Mrazek, David | 3-6,3-6 |