| ITF M15 Naples | 02/20 15:30 | 54 | Lakoseljac, Christian v Adam Jones | Retired | |
| Weston, FL, Singles M-ITF-USA-05A | 02/15 20:25 | 25 | Rodrigo P Mendez v Lakoseljac, Christian | 6-1,6-1 | |
| Weston, FL, Singles M-ITF-USA-05A | 02/14 15:00 | 54 | Elijah Strode v Lakoseljac, Christian | 4-6,6-7 | |
| Weston, FL, Singles M-ITF-USA-05A | 02/13 16:30 | 54 | Lakoseljac, Christian v Isaiah Strode | 7-6,1-6,10-6 | |
| ITF - M15 Palm Coast | 02/08 18:10 | 25 | Jaycer Lyeons v Lakoseljac, Christian | 6-4,6-2 | |
| ITF - M15 Palm Coast | 02/07 15:00 | 54 | Warren Wood v Lakoseljac, Christian | 1-6,6-2,2-10 | |
| ITF - M15 Palm Coast | 02/06 16:30 | 54 | Azariah Rusher v Lakoseljac, Christian | 5-7,4-6 | |
| ITF M25 - Wesley Chapel | 01/24 15:45 | 54 | Lakoseljac, Christian v Matthew Segura | 4-6,6-4,10-12 | |
| ITF M25 - Wesley Chapel | 01/23 14:45 | 54 | Lakoseljac, Christian v Vega, Leonardo | 7-5,6-2 | |
| ITF M25 Columbus | 11/16 15:00 | 25 | Anthrop, Jack v Lakoseljac, Christian | 6-0,6-3 | |
| ITF M15 Winston-Salem | 11/09 18:15 | 25 | Ondrej Horak v Lakoseljac, Christian | 6-4,6-4 | |
| ITF M15 Winston-Salem | 11/08 17:30 | 54 | Lakoseljac, Christian v Leo Vithoontien | 6-3,6-4 | |
| ITF M15 Winston-Salem | 11/07 18:00 | 54 | Lakoseljac, Christian v Ivan Dreycopp | 6-3,6-4 | |
| ITF M15 Ithaca | 11/02 18:30 | 25 | Menelaos Efstathiou v Lakoseljac, Christian | 6-3,6-3 | |
| ITF M15 Ithaca | 11/01 16:30 | 54 | Lakoseljac, Christian v Aman Sharma | 6-2,6-2 | |
| ITF M15 Ithaca | 10/31 14:00 | 54 | Lakoseljac, Christian v Mark Wallner | 6-2,6-7,10-8 | |
| ITF M25 Saint-Augustin | 10/26 17:25 | 25 | Oren Vasser v Lakoseljac, Christian | 2-6,7-6,6-3 | |
| ITF M25 Saint-Augustin | 10/25 16:20 | 54 | Lakoseljac, Christian v Philippe E S Bigonesse | 6-0,6-1 | |
| ITF M25 Saint-Augustin | 10/24 14:00 | 54 | Lakoseljac, Christian v Eloi Roux | 6-1,6-1 | |
| ITF M15 Ithaca | 10/05 19:05 | 25 | Lakoseljac, Christian v Ravichander, Ishaan | 2-6,6-7 | |
| ITF M15 Ithaca | 10/04 14:00 | 54 | Lakoseljac, Christian v Wang, Chukang | 6-3,6-1 | |
| ITF M15 Ithaca | 10/03 14:00 | 54 | Lakoseljac, Christian v Alexey Shtengelov | 6-1,6-1 | |
| ITF M15 Albuquerque | 09/30 18:00 | 27 | Osgar O'Hoisin v Lakoseljac, Christian | 6-1,7-6 | |
| ITF M15 Albuquerque | 09/29 19:15 | 26 | Wang, Chukang v Lakoseljac, Christian | 3-6,3-6 | |
| ITF M15 Albuquerque | 09/28 15:00 | 25 | Lakoseljac, Christian v Huang, Haoyuan | 6-7,6-1,6-4 | |
| Challenger Granby | 08/21 16:30 | 14 | Lakoseljac, Christian v Aidan Mayo | 4-6,2-6 | |
| ITF M15 Memphis | 08/18 00:10 | 25 | Mitsui, Shunsuke v Lakoseljac, Christian | 6-2,6-4 | |
| ITF M25 Edwardsville | 07/27 01:25 | 54 | Lakoseljac, Christian v Alexander Petrov | 1-6,2-6 | |
| ITF M25 Edwardsville | 07/25 14:00 | 54 | Lakoseljac, Christian v Sklizovic, Alex | 6-0,6-2 | |
| ITF M25 Champaign | 07/18 15:00 | 54 | Lakoseljac, Christian v Braswell, Micah | 4-6,4-6 |