Stadium: Court 3 Round: 25 Ground: Hardcourt outdoor
| Challenger Mouilleron le Captif | 2023/10/01 12:00 | Gabriel Debru v Niklas Schell | 6-4,6-1 |
| ITF M15 Forbach | 2023/09/27 08:00 | Niklas Schell v Tom Gentzsch | 6-7,6-7 |
| ITF M15 Monastir | 2023/09/13 12:10 | Aleksandr Lobanov v Niklas Schell | 4-6,7-6,6-2 |
| ITF M15 Budapest | 2023/08/29 12:00 | Niklas Schell v Giles Hussey | 4-6,3-6 |
| ITF M25 Muttenz | 2023/08/16 08:00 | Niklas Schell v Nicolas Parizzia | 4-6,2-6 |
| ITF M15 Frankfurt Am Main | 2023/08/10 09:00 | Niklas Schell v Andrey Chepelev | 3-6,6-7 |
| ITF M15 Frankfurt Am Main | 2023/08/08 10:45 | Niklas Schell v Vincent Marysko | 6-4,6-4 |
| ITF M25 Wetzlar | 2023/08/04 08:00 | Sebastian Fanselow v Niklas Schell | 6-4,6-3 |
| ITF M25 Tavira | 2023/10/13 10:00 | Andrea Guerrieri v Henrique Rocha | 6-7,2-6 |
| ITF M25 Tavira | 2023/10/12 13:35 | Andrea Guerrieri v Francisco Rocha | 6-3,6-2 |
| ITF M25 Tavira | 2023/10/11 12:10 | Andrea Guerrieri v Pedro Araujo | 6-1,6-4 |
| ITF M25 Sharm El Sheikh | 2023/09/21 09:50 | Kris Van Wyk v Andrea Guerrieri | 6-1,6-1 |
| ITF M25 Sharm El Sheikh | 2023/09/20 07:00 | Daniil Ostapenkov v Andrea Guerrieri | 6-7,0-6 |
| ITF M25 Pozzuoli | 2023/09/14 11:10 | Alessandro Pecci v Andrea Guerrieri | 7-6,6-3 |
| ITF M25 Pozzuoli | 2023/09/12 10:30 | Andrea Colombo v Andrea Guerrieri | 0-6,2-6 |
| ITF M15 Monastir | 2023/09/08 08:00 | Andrea Guerrieri v Peter Bertran | 2-6,2-6 |