Stadium: Opatija 3 Round: 27 Ground: Clay
| 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 |
| ITF Croatia F1 | 2018/03/09 13:00 | Nagy, Peter v Escobar, Gonzalo | 3-6,6-3,2-6 |
| ITF Croatia F1 | 2018/03/09 09:00 | Sabanov, Ivan v Nagy, Peter | 5-7,2-6 |
| Turkey F6, Singles Qualifying | 2018/02/14 13:00 | Balazs, Attila v Nagy, Peter | 6-0,6-1 |
| Challenger Budapest | 2018/02/06 17:35 | Nagy, Peter v Elias Ymer | 3-6,2-6 |
| Tunisia F3, Singles Qualifying | 2018/01/25 08:30 | Nagy, Peter v Guttierrez-Ferrol, Sergio | 1-6,2-6 |
| ITF Croatia F3 | 2018/03/22 10:20 | Sabanov, Ivan v Delic, Mate | 6-2,2-6,4-6 |
| ITF Croatia F3 | 2018/03/20 10:00 | Alexandar Lazarov v Delic, Mate | 3-6,6-3,4-6 |
| ITF Croatia F2 | 2018/03/14 09:00 | Delic, Mate v Urbanija, Mike | 5-7,6-2,4-6 |
| ITF Croatia F1 | 2018/03/10 14:15 | Delic, Mate v Nino Serdarusic | 5-7,3-6 |
| ITF Croatia F1 | 2018/03/10 09:00 | Jotovski, Tomislav v Delic, Mate | 3-6,1-6 |
| ITF Croatia F1 | 2018/03/09 13:25 | Nejedly, Pavel v Delic, Mate | 4-6,6-3,3-6 |
| ITF Croatia F1 | 2018/03/08 09:00 | Roko Horvat v Delic, Mate | 1-6,3-6 |
| ITF Turkey F7 | 2018/02/21 12:55 | Bayard, Damien v Delic, Mate | 6-3,2-6,6-3 |