Stadium: Court 5 S Round: 54 Ground: Hardcourt outdoor
| ITF M15 Champaign | 2021/06/21 15:00 | Ortlip, Joshua v Lakoseljac, Christian | 6-3,6-4 |
| ITF M25 Wichita | 2021/06/07 15:00 | Lakoseljac, Christian v Bybel, Nicholas | 5-7,5-7 |
| ITF M15 East Lansing | 2019/11/20 22:10 | Michael Geerts v Lakoseljac, Christian | 6-4,6-4 |
| ITF M15 East Lansing | 2019/11/19 15:00 | Fox, David v Lakoseljac, Christian | 6-7,3-6 |
| ITF M15 East Lansing | 2019/11/17 15:00 | Ellefsen, Nils v Lakoseljac, Christian | 6-7,4-6 |
| ITF M15 Norman | 2019/07/11 16:40 | Lakoseljac, Christian v Andrew Fenty | 1-6,6-2,6-7 |
| ITF M15 Norman | 2019/07/09 15:00 | Alexander Brown v Lakoseljac, Christian | 7-6,3-6,2-6 |
| ITF USA F23 Qual | 2018/08/11 15:00 | Lebedev, Alexander v Lakoseljac, Christian | 6-4,6-4 |
| ITF M15 Edwardsville | 2021/07/24 16:00 | Rinky Hijikata v Cannon Kingsley | 7-6,6-7,6-2 |
| ITF M15 Edwardsville | 2021/07/23 14:00 | Griffith, William v Cannon Kingsley | 3-6,2-6 |
| ITF M15 Edwardsville | 2021/07/22 16:00 | Cannon Kingsley v Felix Corwin | 6-2,6-2 |
| ITF M15 Edwardsville | 2021/07/21 22:10 | Martin Damm v Cannon Kingsley | 3-6,4-6 |
| Weston, FL, Singles M-ITF-USA-05A | 2021/07/03 14:00 | Cannon Kingsley v Gonzalo Villanueva | 4-6,7-6,2-6 |
| Weston, FL, Singles M-ITF-USA-05A | 2021/07/02 20:50 | Federico Agustin Gomez v Cannon Kingsley | 6-3,3-6,6-10 |
| Weston, FL, Singles M-ITF-USA-05A | 2021/07/01 20:06 | Kohen, Alan v Cannon Kingsley | 3-6,1-6 |
| Weston, FL, Singles M-ITF-USA-05A | 2021/07/01 16:25 | Kohen, Alan v Cannon Kingsley | 3-6,1-6 |