Stadium: LEXUS Court Round: 26 Ground: Clay
| ITF M15 Saarlouis | 2023/06/20 16:00 | Joao Fonseca v Milan Welte | 7-5,7-5 |
| ITF M15 Duffel | 2023/06/16 09:00 | Joao Fonseca v Buvaysar Gadamauri | 7-6,2-6,4-6 |
| ITF M15 Duffel | 2023/06/15 13:35 | Marlon Vankan v Joao Fonseca | 4-6,4-6 |
| ITF M15 Duffel | 2023/06/14 08:00 | Dylan Dietrich v Joao Fonseca | 3-6,3-6 |
| ITF M15 Mogi das Cruzes | 2023/04/29 13:15 | Orlando Luz v Joao Fonseca | 7-5,6-2 |
| ITF M15 Mogi das Cruzes | 2023/04/28 15:50 | Rafael Tosetto v Joao Fonseca | 2-6,0-6 |
| ITF M15 Mogi das Cruzes | 2023/04/27 16:55 | Gabriel Roveri Sidney v Joao Fonseca | 1-6,2-6 |
| ITF M15 Mogi das Cruzes | 2023/04/25 23:00 | Joao M Nusdeo v Joao Fonseca | 4-6,3-6 |
| ITF M15 Saarlouis | 2023/06/21 09:20 | Collin Altamirano v Andres Andrade | 7-6,2-6,6-3 |
| ITF M15 Saarlouis | 2023/06/19 09:30 | Boris Fassbender v Collin Altamirano | 2-6,7-6,8-10 |
| ITF M15 Saarlouis | 2023/06/18 09:00 | Marcel Marlon Sudzum v Collin Altamirano | 1-6,2-6 |
| ITF M25 Grasse | 2023/06/11 07:30 | Etienne Donnet v Collin Altamirano | 3-6,6-4,10-6 |
| ITF M25 Carnac | 2023/05/30 16:20 | Titouan Droguet v Collin Altamirano | 6-1,6-2 |
| ITF M25 Carnac | 2023/05/29 11:50 | Loann Massard v Collin Altamirano | 6-2,4-6,5-10 |
| ITF M25 Carnac | 2023/05/28 14:20 | Leo Cohen Bacrie v Collin Altamirano | 6-7,1-6 |
| ITF M15 Pazardzhik | 2023/05/25 09:50 | Collin Altamirano v Matyas Fuele | 5-7,4-6 |