Stadium: Court 1 Round: 19 Ground: Hardcourt indoor
| ITF M25 Decatur | 2023/08/03 13:55 | Shunsuke Mitsui v Oliver Okonkwo | 7-6,6-4 |
| ITF M25 Decatur | 2023/08/01 16:05 | Oliver Okonkwo v Semen Pankin | 6-2,1-6,10-8 |
| ITF M25 Edwardsville | 2023/07/24 14:00 | Kenta Miyoshi v Oliver Okonkwo | 6-3,6-4 |
| ITF M25 Champaign | 2023/07/18 14:55 | Perry Gregg v Oliver Okonkwo | 3-6,6-2,10-7 |
| ITF M15 South Bend | 2023/06/21 17:05 | Adhithya Ganesan v Oliver Okonkwo | 6-0,6-3 |
| ITF M15 South Bend | 2023/06/20 15:00 | John Bernard v Oliver Okonkwo | 2-6,4-6 |
| ITF M15 South Bend | 2023/06/19 14:00 | Oliver Okonkwo v Sean Daryabeigi | 3-6,6-3,13-11 |
| UTR Pro London | 2023/05/20 10:16 | Luka Petrovic v Oliver Okonkwo | 6-4,6-4 |
| ITF M25 Decatur | 2023/08/05 17:50 | Cash Hanzlik v Hunter Heck | 6-2,6-1 |
| ITF M25 Decatur | 2023/08/04 14:00 | Hunter Heck v Ezekiel Clark | 6-1,6-0 |
| ITF M25 Decatur | 2023/08/03 19:50 | Shunsuke Mitsui v Hunter Heck | 0-6,2-6 |
| ITF M25 Edwardsville | 2023/07/26 18:35 | Hunter Heck v Michael Zheng | 6-4,4-6,2-6 |
| ITF M25 Champaign | 2023/07/19 16:35 | Evgeny Donskoy v Hunter Heck | 6-1,6-3 |
| ITF M25 Tulsa | 2023/06/20 16:00 | Alfredo Perez v Hunter Heck | 6-2,6-3 |
| ITF M25 Wichita | 2023/06/14 15:00 | Ezekiel Clark v Hunter Heck | 2-6,6-1,6-4 |
| ITF M25 Wichita | 2023/06/13 14:50 | Hunter Heck v Franco Ribero | 3-6,6-3,10-6 |