Stadium: Court 4 Round: 25 Ground: Hardcourt outdoor
| Challenger Heilbronn | 2021/05/09 11:55 | Christoph Negritu v Aleksandar Vukic | 5-7,2-6 |
| ITF M15 Monastir | 2021/04/25 08:30 | Igor Marcondes v Christoph Negritu | 2-6,2-6 |
| ITF M15 Monastir | 2021/04/24 09:30 | Omar Giacalone v Christoph Negritu | 4-6,2-6 |
| ITF M15 Monastir | 2021/04/22 10:35 | Christoph Negritu v Christian Langmo | 7-5,7-6 |
| ITF M15 Monastir | 2021/04/20 11:15 | Danylo Kalenichenko v Christoph Negritu | 2-6,4-6 |
| ITF M15 Monastir | 2021/04/14 12:05 | Christoph Negritu v Savva Polukhin | 5-7,4-6 |
| ITF M15 Monastir | 2021/04/10 08:30 | Franco Agamenone v Christoph Negritu | 6-1,6-3 |
| ITF M15 Monastir | 2021/04/08 11:25 | Mateus Alves v Christoph Negritu | 4-6,4-6 |