Stadium: Court 10 Round: 26 Ground: Hardcourt outdoor
| ITF - M15 Cancun | 2021/11/23 14:00 | Matic Spec v Joshua Sheehy | 6-3,6-2 |
| ITF - M15 Fayetteville | 2021/11/03 20:25 | Matic Spec v Charles Broom | 1-6,5-7 |
| ITF - M15 Cancun | 2021/10/22 15:00 | Matias Franco Descotte v Matic Spec | 7-5,6-4 |
| ITF - M15 Cancun | 2021/10/21 15:30 | Juan Sebastian Osorio v Matic Spec | 2-6,3-6 |
| ITF - M15 Cancun | 2021/10/19 14:00 | Jesse Flores v Matic Spec | 3-6,5-7 |
| ITF - M15 Cancun | 2021/10/14 14:00 | Matic Spec v Sho Shimabukuro | 6-7,7-6,4-6 |
| ITF - M15 Cancun | 2021/10/13 20:45 | Matic Spec v Jack Gibbens | 6-0,6-3 |
| ITF - M15 Cancun | 2021/10/07 20:05 | Matic Spec v Jesse Flores | 7-6,5-7,6-7 |
| ITF - M15 Cancun | 2021/11/24 19:10 | Luka Petrovic v Hillel Rousseau | 6-4,6-4 |
| ITF - M15 Novi Sad | 2021/07/25 10:45 | Tomislav Jotovski v Luka Petrovic | 7-6,6-2 |
| ITF - M25 Belehrad | 2021/06/30 12:45 | Luka Petrovic v Alexandar Lazarov | 0-6,2-6 |
| ITF - M15 Sarajevo | 2021/06/04 09:00 | Joao Lucas Reis da Silva v Luka Petrovic | 6-3,6-3 |
| ITF - M15 Sarajevo | 2021/06/03 10:50 | Luka Petrovic v Din Karahodza | 6-1,7-5 |
| ITF - M15 Sarajevo | 2021/06/02 14:05 | Luka Petrovic v Aleksandar Mihailovic | 6-4,6-0 |
| ITF - M15 Sarajevo | 2021/06/01 09:00 | Petar Jovanovic v Luka Petrovic | 3-6,7-5,9-11 |
| ITF - M15 Sarajevo | 2021/05/31 12:00 | Max Van Wijk v Luka Petrovic | 3-6,2-6 |