Stadium: LEXUS Court Round: 25 Ground: Clay
| 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 | Nusdeo, Joao Marcos v Joao Fonseca | 4-6,3-6 |
| Challenger - Florianopolis | 2023/04/21 14:00 | Eduardo Ribeiro v Joao Fonseca | 6-1,6-7,7-5 |
| Saarlouis, Singles Qualifying M-ITF-GER-07A | 2023/06/19 09:30 | Milan Welte v Maximilian Homberg | 6-3,6-1 |
| Saarlouis, Singles Qualifying M-ITF-GER-07A | 2023/06/18 09:00 | Milan Welte v Aaron James Williams | 6-4,7-6 |
| ITF M15 Creteil | 2023/03/07 16:40 | Daniil Glinka v Milan Welte | 7-6,6-1 |
| ITF M15 Creteil | 2023/03/06 09:55 | Leo Raquillet v Milan Welte | 3-6,4-6 |
| ITF M15 Creteil | 2023/03/05 08:30 | Oumaouche, Rayane v Milan Welte | 6-1,4-6,8-10 |
| ITF - M15 Oberhaching | 2023/02/12 16:00 | Ben Jones v Milan Welte | 6-4,6-3 |
| ITF M15 Villers Les Nancy | 2022/11/01 10:25 | Mika Brunold v Milan Welte | 2-6,7-6,6-1 |
| ITF M25 Sarreguemines | 2022/10/27 09:30 | Michael Geerts v Milan Welte | 6-3,6-0 |