Stadium: Court 1S Round: 25 Ground: Hardcourt outdoor
| ITF M25 Decatur | 2023/08/03 13:55 | 미츠이, 순수케 v Okonkwo, Oliver | 7-6,6-4 |
| ITF M25 Decatur | 2023/08/01 16:05 | Okonkwo, Oliver v Pankin, Semen | 6-2,1-6,10-8 |
| ITF M25 Edwardsville | 2023/07/24 14:00 | Miyoshi, Kenta v Okonkwo, Oliver | 6-3,6-4 |
| ITF M25 Champaign | 2023/07/18 14:55 | Gregg, Perry v Okonkwo, Oliver | 3-6,6-2,10-7 |
| ITF M15 South Bend | 2023/06/21 17:05 | Adhithya Ganesan v Okonkwo, Oliver | 6-0,6-3 |
| ITF M15 South Bend | 2023/06/20 15:00 | 베르날드, 존 v Okonkwo, Oliver | 2-6,4-6 |
| ITF M15 South Bend | 2023/06/19 14:00 | Okonkwo, Oliver v Sean Daryabeigi | 3-6,6-3,13-11 |
| UTR Pro London | 2023/05/20 10:16 | Petrovic, Luka v Okonkwo, Oliver | 6-4,6-4 |
| ITF M15 Frankfurt Am Main | 2023/08/10 09:00 | 게르치, 루카스 v Yunis, Facundo | 6-1,6-2 |
| ITF M15 Frankfurt Am Main | 2023/08/09 10:15 | Yunis, Facundo v Stepan Mruzek | 6-2,6-4 |
| ITF M15 Frankfurt Am Main | 2023/08/07 13:00 | Yunis, Facundo v Filip Apltauer | 6-1,6-2 |
| ITF M15 Frankfurt Am Main | 2023/08/07 08:00 | Yunis, Facundo v Lipp, Mika | 6-4,6-4 |
| ITF M25 Wetzlar | 2023/08/03 07:55 | 웰트, 밀란 v Yunis, Facundo | 7-5,6-3 |
| ITF M25 Wetzlar | 2023/08/01 10:30 | Yunis, Facundo v 칼지, 라파엘 | 6-4,6-1 |
| ITF M25 Wetzlar | 2023/07/31 11:30 | Yunis, Facundo v Einig, Felix | 6-1,6-2 |
| ITF M15 Uslar | 2023/07/20 13:30 | Yunis, Facundo v 데놀리, 코렌틴 | 5-7,1-6 |