| UTR Pro Easton | 2023/04/08 08:00 | Yujiro Onuma v Alexander Okonkwo | 7-6,6-0 |
| UTR Pro Easton | 2023/04/06 10:00 | Alexander Okonkwo v Ali Habib | 5-7,6-2,6-3 |
| UTR Pro Easton | 2023/04/05 07:00 | Alexander Okonkwo v Michael Shaw | 5-7,6-0,2-6 |
| UTR Pro Easton | 2023/04/04 11:30 | David Quayle v Alexander Okonkwo | 6-4,6-0 |
| UTR Pro Easton | 2023/04/03 08:30 | Hien Q H Pham v Alexander Okonkwo | 6-7,3-6 |
| UTR Pro Cardiff | 2023/02/26 10:30 | William Mclennaghan v Alexander Okonkwo | 7-6,6-3 |
| UTR Pro Cardiff | 2023/02/25 08:00 | Alexander Okonkwo v Robert Beznea | 6-0,6-1 |
| UTR Pro Cardiff | 2023/02/24 08:00 | Alexander Okonkwo v Adam Kresina | 6-3,5-1 |
| ITF M15 Memphis | 2022/08/17 22:50 | David Stevenson v Keshav Chopra | 6-7,4-6 |
| UTR Pro Tennis Series Dallas | 2021/08/14 16:00 | James Tracy v David Stevenson | 7-6,7-5 |
| UTR Pro Tennis Series Dallas | 2021/08/13 13:00 | Stefan Latinov v David Stevenson | 4-6,3-6 |
| UTR Pro Tennis Series Dallas | 2021/08/11 14:30 | David Stevenson v Nicklas Oberg | 6-1,6-0 |
| UTR Pro Tennis Series Dallas | 2021/08/10 14:30 | David Stevenson v Nicolas Meister | 6-3,6-2 |
| UTR Pro Tennis Series Dallas | 2021/08/09 15:30 | Nitzan Ricklis v David Stevenson | 6-7,1-6 |