Stadium: Court 6 Round: 14 Ground: Hardcourt outdoor
| Challenger Pune | 2023/02/26 10:30 | Calum Puttergill v Makoto Ochi | 1-6,2-6 |
| Challenger Granby | 2023/07/16 17:40 | Calum Puttergill v Joshua Sheehy | 4-6,6-7 |
| Challenger Medellin | 2023/06/28 19:55 | Nicolas Mejia v Calum Puttergill | 6-4,6-3 |
| Challenger Medellin | 2023/06/27 20:50 | Calum Puttergill v Ignacio Monzon | 6-3,7-6 |
| Challenger Medellin | 2023/06/26 20:00 | Ignacio Monzon v Calum Puttergill | 6-3,1-6,2-6 |
| Challenger Medellin | 2023/06/25 18:20 | Alejandro Uribe Quintero v Calum Puttergill | 1-6,6-1,2-6 |
| Challenger Cali | 2023/06/18 20:45 | Calum Puttergill v Ignacio Monzon | 2-6,0-6 |
| Challenger Palmas del Mar | 2023/06/11 18:15 | Kaito Uesugi v Calum Puttergill | 6-3,6-1 |
| ITF M15 Monastir | 2023/05/25 09:30 | Calum Puttergill v Rigele Te | 1-6,4-6 |
| ITF M25 Champaign | 2023/07/19 14:50 | Sebastian Gorzny v Makoto Ochi | 6-4,6-2 |
| ITF M25 Anseong | 2023/06/20 03:55 | Makoto Ochi v Taisei Ichikawa | 2-6,6-7 |
| ITF M25 Changwon | 2023/06/16 01:00 | Makoto Ochi v Sanhui Shin | 3-6,3-6 |
| ITF M25 Changwon | 2023/06/15 01:25 | Makoto Ochi v Duckhee Lee | 6-0,4-6,6-2 |
| ITF M25 Changwon | 2023/06/14 01:00 | Makoto Ochi v Jun Ha Hyun | 6-0,6-3 |
| ITF M25 Daegu | 2023/06/06 00:50 | Takuya Kumasaka v Makoto Ochi | 6-3,6-1 |
| Challenger Busan | 2023/05/08 04:25 | Makoto Ochi v Hiroki Moriya | 4-6,4-6 |
| Challenger Busan | 2023/05/07 05:05 | Peter Gojowczyk v Makoto Ochi | 6-4,2-6,5-7 |