| ITF M25 Antalya | 02/05 07:00 | 62 | Lorenzo Joaquin Rodriguez v Stefan Cizelj-Zivkovic | 7-5,6-2 | |
| ITF M25 Antalya | 01/29 07:30 | 62 | Stefan Cizelj-Zivkovic v Emir Sutekin | 3-6,0-6 | |
| ITF M15 Antalya | 11/21 06:30 | 62 | Stefan Cizelj-Zivkovic v Michel Hopp | 6-4,4-6,3-10 | |
| ITF M15 Antalya | 11/20 07:00 | 62 | Emir Sutekin v Stefan Cizelj-Zivkovic | 4-6,4-6 | |
| ITF M15 Antalya | 11/14 12:25 | 62 | Toby Martin v Stefan Cizelj-Zivkovic | 6-2,6-2 | |
| ITF M15 Antalya | 11/13 06:00 | 62 | Stefan Cizelj-Zivkovic v Aleksandr Lobanov | 4-6,6-0,10-5 | |
| ITF M15 Benicarlo | 11/06 08:30 | 62 | Stefan Cizelj-Zivkovic v Jordi Domenech Castillo | 3-6,3-6 | |
| ITF M25 Girona | 10/16 14:00 | 62 | Jordi Domenech Castillo v Stefan Cizelj-Zivkovic | 5-7,6-2,10-5 | |
| ITF M25 Madrid | 09/11 11:00 | 62 | Luke Simkiss v Stefan Cizelj-Zivkovic | 6-2,1-6,12-10 | |
| ITF M25 Madrid | 09/05 09:00 | 62 | Daniel L Salmeron v Stefan Cizelj-Zivkovic | 7-6,6-3 | |
| ITF M25 Madrid | 09/04 12:30 | 62 | Paul Ender v Stefan Cizelj-Zivkovic | 3-6,3-6 | |
| ITF M15 Cairo | 08/28 08:00 | 62 | Stefano Papagno v Stefan Cizelj-Zivkovic | 6-2,4-6,12-10 | |
| ITF M15 Cairo | 08/22 08:00 | 62 | Stefan Cizelj-Zivkovic v Elio Jose Ribeiro Lago | 1-6,5-7 | |
| ITF M15 Cairo | 08/21 09:00 | 62 | Stefan Cizelj-Zivkovic v Mateo Branc | 7-5,4-6,10-8 | |
| ITF M15 Xativa | 07/31 08:00 | 62 | Francesco Scarpa v Stefan Cizelj-Zivkovic | 7-5,6-3 | |
| ITF M25 Gandia | 07/18 11:00 | 62 | Stefan Cizelj-Zivkovic v Giacomo Revelli | Retired | |
| ITF M15 Casablanca | 07/10 12:00 | 54 | Stefan Cizelj-Zivkovic v Nikita Ianin | Retired | |
| ITF M15 Casablanca | 07/03 09:00 | 54 | Imran Sibille v Stefan Cizelj-Zivkovic | 7-6,6-4 | |
| ITF M15 Cordoba | 06/05 16:00 | 62 | Stefan Cizelj-Zivkovic v Juan P Canas Garcia | 1-6,4-6 | |
| ITF M15 Heraklion | 05/30 08:00 | 62 | Kai Lemstra v Stefan Cizelj-Zivkovic | 6-0,6-3 | |
| ITF M15 Heraklion | 05/29 09:00 | 62 | Steven McCartney v Stefan Cizelj-Zivkovic | 4-6,7-6,4-10 | |
| ITF M25 Netanya | 05/22 07:00 | 62 | Amit Shahar v Stefan Cizelj-Zivkovic | 4-6,6-4,10-7 | |
| ITF M25 Monastir | 04/17 11:30 | 62 | Stefan Cizelj-Zivkovic v Alexandre Aubriot | 3-6,2-6 | |
| ITF M25 Monastir | 04/11 09:00 | 62 | Stefan Cizelj-Zivkovic v Pedro Iamachkine | 0-6,1-6 | |
| ITF M15 Palmanova | 03/20 11:30 | 62 | Javier Molino v Stefan Cizelj-Zivkovic | 6-1,6-0 | |
| ITF M15 Palmanova | 03/14 08:15 | 62 | Gabriele Piraino v Stefan Cizelj-Zivkovic | 6-0,6-1 | |
| ITF M15 Torello | 02/28 09:00 | 62 | Stefan Cizelj-Zivkovic v Gabriele Moghini | 4-6,4-6 | |
| ITF M15 Santo Domingo | 12/08 13:30 | 25 | Osgar O'Hoisin v Stefan Cizelj-Zivkovic | 6-1,6-2 | |
| ITF M25 Santo Domingo | 12/07 13:00 | 62 | Herbert Jody Maginley v Stefan Cizelj-Zivkovic | 6-1,3-6,10-4 | |
| ITF M25 Santo Domingo | 11/29 15:00 | 62 | Jesus M Rosario v Stefan Cizelj-Zivkovic | 7-5,6-1 |