Stadium: Court 6 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Monastir | 2021/03/25 08:30 | Mohamed Aziz Dougaz v Christoph Negritu | 6-1,0-6,6-3 |
| ITF M15 Monastir | 2021/03/23 13:30 | Alex Barrena v Christoph Negritu | 6-3,3-6,4-6 |
| ITF M15 Monastir | 2021/03/18 10:00 | Christoph Negritu v Raphael Collignon | 6-7,4-6 |
| ITF M15 Monastir | 2021/03/16 09:55 | Nicolas Moreno De Alboran v Christoph Negritu | 6-7,2-6 |
| ITF M15 Monastir | 2021/03/10 12:15 | Kai Lemstra v Christoph Negritu | 6-4,2-6,6-1 |
| ITF M15 Monastir | 2021/03/02 08:30 | Constantin Schmitz v Christoph Negritu | 6-4,7-6 |
| ITF M15 Monastir | 2021/02/24 08:00 | Colin Sinclair v Christoph Negritu | 6-1,7-5 |
| German Championship | 2020/12/10 10:30 | Jakob Schnaitter v Christoph Negritu | 7-6,7-5 |
| ITF M15 Monastir | 2021/03/26 08:30 | Christian Langmo v Colin Sinclair | 6-4,3-6,2-6 |
| ITF M15 Monastir | 2021/03/25 10:30 | Benjamin Lock v Christian Langmo | 6-3,4-6,4-6 |
| ITF M15 Monastir | 2021/03/23 08:30 | Evan Zhu v Christian Langmo | 1-6,6-3,6-7 |
| ITF M15 Monastir | 2021/03/19 08:00 | Christian Langmo v Savva Polukhin | 6-4,4-6,4-6 |
| ITF M15 Monastir | 2021/03/18 11:30 | Alexander Donski v Christian Langmo | 2-6,4-6 |
| ITF M15 Monastir | 2021/03/17 11:55 | Christian Langmo v Samir Hamza Reguig | 6-0,2-6,6-3 |
| ITF M25 Naples | 2021/02/24 16:40 | Christian Langmo v Michael Redlicki | 6-3,5-7,3-6 |
| ITF M25 Naples | 2021/02/23 16:40 | Harris Walker v Christian Langmo | 3-6,3-6 |