Stadium: Jaime Oncins Round: 25 Ground: Clay
| ITF M15 Belem | 2023/08/18 19:00 | Mateo Barreiros Reyes v Fernando Yamacita | 6-4,6-4 |
| ITF M15 Belem | 2023/08/17 17:00 | Daniel Antonio Nunez v Fernando Yamacita | 6-7,0-6 |
| ITF M15 Belem | 2023/08/15 21:10 | Lautaro Agustin Corthey v Fernando Yamacita | 3-6,3-6 |
| ITF M25 Bolzano | 2023/08/02 08:00 | Fernando Yamacita v Nikolay Vylegzhanin | 7-6,3-6,2-6 |
| ITF M25 Bolzano | 2023/08/01 07:00 | Fernando Yamacita v Iacopo Sada | 6-3,6-1 |
| ITF M15 Perugia | 2023/07/28 16:10 | Luca Castagnola v Fernando Yamacita | 6-4,4-6,6-3 |
| ITF M15 Perugia | 2023/07/27 14:40 | Federico Bondioli v Fernando Yamacita | 1-6,4-6 |
| ITF M15 Perugia | 2023/07/26 09:30 | Francesco Liucci v Fernando Yamacita | 3-6,2-6 |
| ITF M15 Belem | 2023/08/19 19:00 | Ignacio A B Otarola v Rodrigo Pacheco Mendez | 3-6,1-6 |
| ITF M15 Belem | 2023/08/18 19:00 | Jean-Christian Morandais v Ignacio A B Otarola | 3-6,3-6 |
| ITF M15 Belem | 2023/08/17 17:00 | Paulo A S Dos Santos v Ignacio A B Otarola | 5-7,3-6 |
| ITF M15 Belem | 2023/08/15 20:45 | Ignacio A B Otarola v Preston Brown | 3-6,6-3,6-2 |
| ITF M15 Arequipa | 2023/08/11 23:30 | Alvaro G Meza v Ignacio A B Otarola | 6-0,6-2 |
| ITF M15 Arequipa | 2023/08/10 15:55 | Arklon H D Pino v Ignacio A B Otarola | 6-2,4-6,2-6 |
| ITF M15 Arequipa | 2023/08/09 14:30 | Ignacio A B Otarola v Gianluca Ballotta | 6-4,6-1 |
| ITF M15 Arequipa | 2023/08/08 14:30 | Ignacio A B Otarola v Luis Jose Nakamine | 7-6,6-1 |