Stadium: Court 8 Round: 26 Ground: Hardcourt outdoor
| Challenger Busan | 2023/05/08 02:00 | Jason Jung v Shinji Hazawa | 6-2,6-4 |
| Challenger Gwangju | 2023/04/30 03:05 | Shinji Hazawa v Peter Gojowczyk | 1-6,3-6 |
| Challenger Seoul | 2023/04/24 02:00 | Ji Sung Nam v Shinji Hazawa | 6-2,6-4 |
| Challenger Seoul | 2023/04/23 02:00 | Shinji Hazawa v Ajeet Rai | 4-6,6-3,6-4 |
| ITF M25 Kashiwa | 2023/04/05 01:00 | Hikaru Shiraishi v Shinji Hazawa | 6-7,6-2,6-3 |
| ITF M25 Tsukuba | 2023/03/28 05:55 | Ryuki Matsuda v Shinji Hazawa | 6-2,6-4 |
| Challenger Puerto Vallarta | 2023/03/05 19:55 | Gabriel Decamps v Shinji Hazawa | 6-4,6-3 |
| Challenger Rome GA | 2023/02/20 15:00 | Shinji Hazawa v Gabriele Thomas Brancatelli | 3-6,6-7 |
| ITF M15 Tacarigua | 2023/04/27 21:05 | Finn Reynolds v Victor Lilov | 3-6,4-6 |
| ITF M15 Tacarigua | 2023/04/25 19:25 | Finn Reynolds v Justin Roberts | 7-6,4-6,6-2 |
| ITF M15 Tacarigua | 2023/04/20 18:00 | Edward Winter v Finn Reynolds | 5-7,6-2,7-6 |
| ITF M15 Tacarigua | 2023/04/18 21:00 | Finn Reynolds v Joseph Cadogan | 6-4,7-5 |
| ITF M15 Tacarigua | 2023/04/17 18:00 | Finn Reynolds v Chukwudumebi Smarty | 6-2,6-1 |
| ITF M25 Calabasas | 2023/03/23 20:45 | Omni Kumar v Finn Reynolds | 6-4,3-6,10-2 |
| ITF M25 Calabasas | 2023/03/21 20:55 | Federico Agustin Gomez v Finn Reynolds | 6-1,3-6,9-11 |
| ITF M25 Calabasas | 2023/03/20 18:00 | Joe Tyler v Finn Reynolds | 1-6,6-4,3-10 |