Stadium: Court 1 Round: 27 Ground: Clay
| ITF Croatia F3 | 2018/03/22 09:00 | Kocevar-Desman, Tom v Nagy, Peter | 3-6,2-6 |
| ITF Bosnia and Herzegovina F3 | 2018/05/31 09:00 | Kocevar-Desman, Tom v Zarkovic, Bodin | 6-3,6-1 |
| ITF Bosnia and Herzegovina F3 | 2018/05/30 10:30 | Daljev, Pavle v Kocevar-Desman, Tom | 5-7,4-6 |
| ITF Bosnia and Herzegovina F2 | 2018/05/25 10:00 | Butler, Samm v Kocevar-Desman, Tom | 6-4,6-2 |
| ITF Bosnia and Herzegovina F2 | 2018/05/24 08:00 | Kocevar-Desman, Tom v Celebic, Ljubomir | 7-5,6-2 |
| ITF Bosnia and Herzegovina F2 | 2018/05/23 11:00 | Nincevic, Frane v Kocevar-Desman, Tom | 2-6,2-6 |
| ITF Bosnia and Herzegovina F1 | 2018/05/17 08:00 | Nerman Fatic v Kocevar-Desman, Tom | 3-6,7-5,6-4 |
| ITF Bosnia and Herzegovina F1 | 2018/05/16 12:30 | Zmak, Deni v Kocevar-Desman, Tom | 4-6,6-1,1-6 |
| Turkey F15, Singles Qualifying | 2018/04/17 07:30 | Kocevar-Desman, Tom v Rudolf Molleker | 4-6,3-6 |
| ITF Bosnia and Herzegovina F3 | 2018/05/31 11:25 | Domagoj Biljesko v Nagy, Peter | 4-6,0-6 |
| ITF Bosnia and Herzegovina F3 | 2018/05/30 13:30 | Gorazd Srbljak v Nagy, Peter | 3-6,3-6 |
| ATP Budapest Qual | 2018/04/21 08:30 | Matteo Berrettini v Nagy, Peter | 6-3,6-4 |
| ITF Croatia F3 | 2018/03/24 10:00 | Nagy, Peter v Geoffrey Blancaneaux | 1-6,1-6 |
| ITF Croatia F3 | 2018/03/23 10:00 | Nagy, Peter v Delic, Mate | 6-4,2-6,6-3 |
| ITF Croatia F3 | 2018/03/22 09:00 | Kocevar-Desman, Tom v Nagy, Peter | 3-6,2-6 |
| ITF Croatia F3 | 2018/03/21 13:15 | Yvo Panak v Nagy, Peter | 4-6,5-7 |
| ITF Croatia F2 | 2018/03/13 10:00 | Zdenek Kolar v Nagy, Peter | 6-4,6-4 |