| ITF M15 Celje | 06/27 07:00 | 54 | Jaka Protic Zakelj v Jakub Katuch | 3-6,6-7 | |
| ITF M15 Celje | 06/26 11:45 | 54 | Zsombor Velcz v Jaka Protic Zakelj | 7-5,3-6,5-10 | |
| ITF M15 Store | 06/19 14:15 | 54 | Jaka Protic Zakelj v Timofey Stepanov | 2-6,5-7 | |
| ITF M15 Litija | 06/12 07:00 | 54 | Jaka Protic Zakelj v Timofey Stepanov | 5-7,4-6 | |
| ITF M15 Warmbad-Villach | 05/21 07:00 | 44 | Jaka Protic Zakelj v Leonardo Mazzucchelli | 6-0,2-6,6-10 | |
| ITF M15 Krško | 05/18 14:35 | 25 | Jaka Protic Zakelj v Lucas Poullain | 0-6,0-6 | |
| ITF M15 Krško | 05/17 11:00 | 54 | Lun Obrul v Jaka Protic Zakelj | 2-6,3-6 | |
| ITF M15 Krško | 05/15 08:00 | 54 | Liam Puttergill v Jaka Protic Zakelj | 2-6,6-2,7-10 | |
| ITF M15 Rovinj | 03/12 12:00 | 62 | Josip Simundza v Jaka Protic Zakelj | 6-0,6-1 | |
| ITF M15 Porec | 03/06 08:55 | 62 | Jaka Protic Zakelj v Alessio Zanotti | 2-6,0-6 | |
| ITF M15 Porec | 03/05 09:00 | 62 | Jaka Protic Zakelj v Federico Valle | 7-6,6-4 | |
| ITF M15 Sozopol | 10/10 09:30 | 54 | Pavel Shumeiko v Jaka Protic Zakelj | 6-7,6-1,10-4 | |
| ITF M15 Sozopol | 10/09 15:20 | 54 | Jaka Protic Zakelj v Mikolaj Lis | 6-7,6-4,10-7 | |
| ITF M15 Sozopol | 10/02 12:00 | 54 | Jaka Protic Zakelj v Matic Dimic | 4-6,4-6 | |
| ITF M25 Pirot | 09/19 08:00 | 44 | Jaka Protic Zakelj v Strahinja Rakic | 7-5,4-6,5-10 | |
| ITF M25 Pirot | 09/18 09:30 | 44 | Samuil Konov v Jaka Protic Zakelj | 1-6,3-6 | |
| ITF M15 Zlatibor | 09/15 11:00 | 26 | Gauthier Onclin v Jaka Protic Zakelj | 6-2,6-1 | |
| ITF M15 Zlatibor | 09/14 09:30 | 25 | Nikola Zekic v Jaka Protic Zakelj | 7-5,5-7,4-6 | |
| ITF M15 Zlatibor | 09/13 09:40 | 62 | Vanja Hodzic v Jaka Protic Zakelj | 7-6,4-6,8-10 | |
| ITF M15 Zlatibor | 09/12 12:00 | 62 | Luka Todorovic v Jaka Protic Zakelj | 4-6,2-6 | |
| ITF M25 Maribor | 09/05 07:30 | 44 | Tilen Kovac v Jaka Protic Zakelj | 6-3,6-2 | |
| ITF M25 Maribor - kvalifikatsioon | 09/04 10:40 | 44 | Mateo Martinovic v Jaka Protic Zakelj | 6-3,2-6,8-10 | |
| ITF M25 Maribor | 08/30 14:30 | 25 | Jaka Protic Zakelj v Valerio Aboian | 0-6,4-6 | |
| ITF M15 Celje | 08/22 07:25 | 54 | Roko Horvat v Jaka Protic Zakelj | 6-0,6-0 | |
| ITF M15 Celje | 08/21 07:30 | 54 | Martin Zeljenka v Jaka Protic Zakelj | 4-6,2-6 | |
| ITF M15 Bad Waltersdorf | 08/15 07:00 | 44 | Maurus Malgiaritta v Jaka Protic Zakelj | 1-6,6-3,10-7 | |
| ITF M15 Bad Waltersdorf | 08/14 09:00 | 44 | Jaka Protic Zakelj v Victor Sklenka | 6-2,3-6,10-4 | |
| ITF M25 Radomlje | 07/19 10:15 | 25 | Jaka Protic Zakelj v Dusan Obradovic | 4-6,7-6,2-6 | |
| ITF M25 Radomlje | 07/18 10:15 | 54 | Igor Gimenez v Jaka Protic Zakelj | 6-2,6-7,6-10 | |
| ITF M25 Radomlje | 07/17 14:45 | 54 | Jaka Protic Zakelj v Radovan Michalik | 6-4,6-3 |