Stadium: Court 1 Round: 26 Ground: Hardcourt outdoor
| ITF M25 The Hague | 2023/07/06 16:45 | Collin Altamirano v Guy Den Ouden | 6-7,6-3,2-6 |
| ITF M25 The Hague | 2023/07/05 17:10 | Collin Altamirano v Oskar Jansson | 6-2,6-4 |
| ITF M25 The Hague | 2023/07/03 10:00 | Roland Stuurman v Collin Altamirano | 2-6,6-3,10-8 |
| ITF M25 The Hague | 2023/07/02 08:00 | Twan Van Zijl v Collin Altamirano | 1-6,5-7 |
| ITF M15 Wroclaw | 2023/06/26 08:00 | Collin Altamirano v Michael Agwi | 3-6,3-6 |
| ITF M15 Wroclaw | 2023/06/25 09:00 | Kris Krawcewicz v Collin Altamirano | 3-6,0-6 |
| ITF M15 Saarlouis | 2023/06/22 10:15 | Joao Fonseca v Collin Altamirano | 6-2,6-3 |
| ITF M15 Saarlouis | 2023/06/21 09:20 | Collin Altamirano v Andres Andrade | 7-6,2-6,6-3 |
| ITF M25 Kashiwa | 2023/04/05 02:40 | Rimpei Kawakami v Hiroyasu Ehara | 6-0,6-0 |
| ITF M25 Kashiwa | 2023/04/03 02:30 | Hiroyasu Ehara v Naoki Tajima | 6-4,6-2 |
| ITF M25 Kashiwa | 2023/04/02 04:00 | Yuichiro Inui v Hiroyasu Ehara | 4-6,2-6 |
| ITF M15 Antalya | 2023/03/14 11:20 | Gabriele Pennaforti v Hiroyasu Ehara | 6-0,6-2 |
| ITF M15 Antalya | 2023/03/13 16:10 | Jiri Jenicek v Hiroyasu Ehara | 2-6,1-6 |
| ITF M15 Antalya | 2023/03/12 10:30 | Filippo Verdese v Hiroyasu Ehara | 1-6,1-6 |
| ITF M15 Antalya | 2023/03/01 07:00 | Hiroyasu Ehara v Dominik Kellovsky | 3-6,2-6 |
| ITF M15 Antalya | 2023/02/28 07:00 | Igor Gimenez v Hiroyasu Ehara | 6-7,3-6 |